Fly Ash Silo

In a typical fly ash processing system, the material produced by the combustion is captured by an electrostatic precipitator (ESP) or baghouses before the flue gas reaches the chimney. These ESPS and baghouses generally have multiple cone hoppers at the bottom where the ash is collected by gravity and then transferred to a fly ash storage silo.These storage silos generally have provisions for a truck load-out to carry the fly ash for disposal or reuse.

Fly ash handling systems often encounter problems due to friction properties and fine particle size distribution if they are designed without following a prudent engineering approach. Therefore, we have established strict design standards and comprehensive preventive measures for our fly ash steel silo.

Our steel silos are constructed using the most advanced construction techniques and using the highest quality steel, can meet the needs of safe storage and economical use of fly ash. We have professional engineers, who can design fly ash silos according to the performance and structural requirements of our clients. What’s more, our fly ash steel silos have suitable interior coating support to make the service life as long as possible.

Why Choose Us

• We are experts in designing proper silos for material storage and transfer requirements;
• We provide silos with complete structural support steel and inlet platform;
• We offer free maintenance guide and one year free repair service;
• We have the most advanced silo construction equipment and professional construction teams.

Steps of Fly Ash Silo Cleaning

First of all, in the construction site of the fly ash silo, temporary warning signs should be set, and the specified construction scope should not be exceeded. In addition, non-constructors are not allowed to enter the construction site.

Close the pipe where the fly ash enters the silo and bundle the wires and hang the warning sign.

When there is no more fly ash in the silo, the downstream equipment should be put into the repair position.

Lighting lamp should be put into the fly ash silo from the hole in the center of its roof. The cleaners can not touch the lighting tools and wiring.

In the process of cleaning up the fly ash silo, the proportion of personnel in the silo and out the silo should be greater than 2:1. Professionals should be sent to the outside of the fly ash warehouse for monitoring.

The cleaners must be well equipped with protection gears before they enter the fly ash silo. The gears should include anti-dust masks, goggles, safety shoes, safety helmets, etc.

When entering the fly ash silo, the cleaners have to fasten two safety ropes, one fixed to the support structure outside the dust collection device, the other fixed to the pool on the ladder.

Know More About Fly Ash

Fly ash is also called coal ash or “pulverised fuel ash” in the United Kingdom. It is one of the coal combustion products, composed of the fine particles that are driven out of the boiler with the flue gases. Ash that falls in the bottom of the boiler is called bottom ash. It is a general name used for the residual products of combustion that rise with flue gases. Chemically and physically, fly ash can have many forms depending upon the type of fuel burned and handling methods. The typical fly ash contains a significant amount of silicon dioxide and calcium oxide, which make it frictional and abrasive. Usually, fly ash has a fine particle size distribution with most less than 100 microns. Given the fine particle size, frictional nature and high temperature, fly ash can be a difficult material to handle reliably. In modern coal-fired power plants, fly ash is generally captured by electrostatic precipitators or other particle filtration equipment before the flue gases reach the chimneys. Together with bottom ash removed from the bottom of the boiler, it is known as coal ash.

Widely Applications of Fly Ash

Fly ash can be used:

• as the replacement for Portland cement in concrete because of its pozzolanic properties;
• to construct embankment or other roads;
• in grout and flowable fill production;
• in waste stabilization and solidification;
• in cement clinkers production (as a substitute material for clay);
• in mine reclamation;
• to stabilize soft soils;
• as aggregate substitute material (e.g. for brick production);
• as mineral filler in asphaltic concrete;
• to melt ice on rivers, roads or parking lots.

Agricultural uses: soil amendment, fertilizer, cattle feeders, soil stabilization in stock feed yards, and agricultural stakes.

As we all know, fly ash has wide application, but its wide range of uses also increases the risks of environmental pollution. The usual pollution contains groundwater contamination and air pollution. Therefore, it is important to store fly ash to prevent it from polluting environment. Steel silo is one of the good choices for fly ash storage. And our steel silos deserve your first choice if you decide to store fly ash in steel silo.

Coal powder refers to coal with a particle size of less than 0.5 mm, which is a pulverized coal product prepared by grinding coal into a certain particle size through a coal powder preparation system. Pulverized coal is widely used in many fields such as steelmaking and power generation. According to the purpose, it is generally divided into blast furnace pulverized coal, boiler pulverized coal, industrial kiln pulverized coal, cast pulverized coal, and so on. In modern society, people have begun to use steel silos to store pulverized coal. The use of pulverized coal steel silos is becoming more and more common.

The Outstanding Performance Of Coal Steel Silo

The pulverized coal steel silo completely compensates for the shortcomings in the traditional concrete silo design. With a new concept and cutting-edge digital functions, it almost achieves a 100% emptying rate and brings safety, reliability, energy saving, environmental protection, and cost-effectiveness.

Advanced Design:

The coal steel silo can be 4-15 meters in diameter and the design capacity is 500–5000 cubic meters. The silo bottom is a self-flowing multi-point discharge and is loaded in bulk.

Unique Structure:

The silo body is designed to be cylindrical. The top and the bottom of the silo are designed to be tapered or platform-shaped, all of which are all-steel structures, waterproof and moisture-proof, and can prevent the occurrence of pulverized coal slabs, core pulling, tilting, and collapse.

Large Capacity:

A single silo has a volume of 100–5000 cubic meters and can form a large-capacity silo group.

Easy Input:

According to the size of the pulverized coal dust and the situation on the spot, different methods can be adopted to input the silo, such as lifting machine input, conveyor belt input, tubular belt input, etc.

Low Investment:

Compared with the concrete silo, the steel silo can save about 50% of the construction cost and 60% of the land.

Safe and Reliable:

We use patent dust removal technology during the input and out to avoid environmental pollution.

Economic and Stable:

The steel silo has a low maintenance cost and low energy cost, but a long service life which could reach 30 years.

Safety Precautions in Use

Due to its own characteristics, coal may spontaneously ignite and explode after being processed into pulverized coal. The early stage of pulverized coal explosion is often spontaneous combustion. The finer the pulverized coal is, the greater the risk of explosion. The possibility of the explosion of coarse coal powder is smaller, and it will hardly explode when the particle size of coal powder is larger than 0.1 mm.

Since pulverized coal is a powdery particulate matter, if there is a problem with the storage method and method, it will cause environmental pollution and is extremely harmful to human health.

We should always pay attention to the following issues during pulverized coal storage:

1. During the storage of pulverized coal, the level of the pulverized coal in the silo should be kept to about 80%, and the load should be kept stable. At the same time, pay attention to tracking the temperature and the CO concentration inside the silo.
2. Empty the pulverized coal silo when you are going to stop grinding for a long time.
3. In the short-term stop grinding, if there is still pulverized coal in the warehouse, a layer of raw meal powder should be placed in the warehouse, and the CO content in the warehouse and the temperature change in the upper and lower limits should be closely monitored.
4. Once you find that the coal powder silo is on fire, you should calm down, and calmly and quickly prepare for the fire.
5. If it is necessary to enter the steel silo for maintenance inspection, it can be entered only if there is only a small amount of pulverized coal in the silo.
6. Before entering the silo, you should know the temperature and CO rise in the coal powder bin. If the bottom temperature exceeds 80 °C during the shutdown, or the temperature of the top wall of the silo reaches 75 °C, and the CO concentration at the top of the silo continues to rise, it indicates that the coal powder has self-ignited in the silo, and it should be prohibited to enter the silo at this time.
7. The same person should not stay in the pulverized coal silo for too long. If you feel unwell at work, you need to go out of the silo immediately. Assisting personnel outside the silo need to be in close contact with the operators inside the silo to prevent accidents.

Limestone Storage Silo

Limestone is a type of sedimentary rock, composed mainly of skeletal fragments of marine organisms such as coral, forams, and mollusks. Its major materials are the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3).

The limestone storage silo is one of the most commonly used containers in the lime storage industry. The materials for the construction of the lime silo include double-sided galvanized coils, pattern plates, channel steels, and steel sections. To fit different use requirements, the engineers can design and build steel silos of various specifications, capacities, and volumes, ranging from 10,000 tons to 50,000 tons.

The limestone silo consists of a powder storehouse body, a discharging pipe, and silo top platforms, escalators, a dust removal system, a pressure and vacuum release valve, a material position indicator, a flow system, weighing feeder.

Limestone Storage Silo Advantages

• Economic overall cost

Our professional engineers will design the most economical plan for our customers. The advanced spiral folding technology also made our silos less expensive.

• High strength

The design and structure of our limestone silos could minimize the effect of earthquakes, and guarantee the safety of the silo.

• High construction efficiency

With our experienced construction team and advanced equipment, our limestone silos can be constructed with high efficiency.

• High automatic level

The operation of our limestone silos is highly automatic, and it is very convenient to maintain.

• Great air-tight and anti-corrosion

High-quality galvanized steel and the double-seaming technology gave our lime silos outstanding anti-corrosion ability and air-tightness.

About Limestone

Physical properties:

Limestone is represented by calcite crystallites. The crystal morphology is complex. It often assumes scalenohedral and rhombohedral, light gray or blue-gray dense block, granular, nodular, and porous structure.

Limestone has a hardness of 3, a density of 2.6-2.9, a melting point of 825°C, and it decomposes into calcium oxide and carbon dioxide between 830-1,020°C. Limestone will inflate and dissolve when it encounters dilute acid.

Uses:

Limestone has numerous uses: as a building material, an essential component of concrete (Portland cement), as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, as a chemical feedstock for the production of lime, as a soil conditioner, or as a popular decorative addition to rock gardens.

Sand and gravel refer to particles with a diameter of 0.074 to 2 mm formed by rain erosion or artificial milling after weathering. Sand is divided into many types, such as river sand, sea sand, metal sand, sand after natural sandstone pulverization, and so on. The main component of ordinary sand is silicon dioxide (SiO2).

With the vigorous development of the world economy, infrastructure construction has been taking place. The use of sand is also increasing. Natural sand has been difficult to meet people’s needs. So machine-made sand began to be widely used. Machine-made sand refers to the sand processed by sand-making machines and other ancillary equipment. The finished products are more regular and can be processed into sands of different rules and sizes according to different process requirements.

How To Store Sand

Traditionally, sand is generally stored in plastic sheds built in the stockyard with steel components. However, some sites in the stockyards are not solid, flat, and clean, and are likely to cause secondary pollution to the sand. Moreover, various types of sand stored in the stockyard cannot be completely separated, they could easily mix with each other so that the quality of sand cannot be guaranteed. If the pile height of the sand is too high, it cannot ensure that the top is flat, which can easily cause the stack to collapse, and the loading efficiency of transport vehicles would also be very low.

The most important thing is that with the increasing emphasis on environmental protection if sand is piled up in the open air, it will easily cause sand to blow in windy weather and cause air pollution. This will not be able to meet the standards of environmental protection and will not be conducive to the health of residents.

For machine-made sand producers, the environmental pressure they face is even greater. If the problem of environmental protection that occurs during the production and storage of sand cannot be solved, the company will not be able to establish a foothold and will not be able to survive.

This is where the steel silo storage system came in. The sand silo could perfectly solve the problem of sand storage, specifically in the:

• The environmental pollution is solved. The sand silo not only guaranteed the high-quality air environment and production conditions of the plant area but also cause zero pollution to the surrounding environment. We can say that it achieves a good and harmonious coexistence of economic and social benefits.
• The quality of sand can be well maintained. The sand silo eliminates potential secondary pollution to the sand and maintains its physical and chemical properties of it, such as humidity, temperature, and impurity content. This provides a reliable guarantee for the quality of the storage sand.
• The loading and unloading efficiency of the storage sand can also be largely enhanced with the sand silo system.

Why Choose Us?

We use high-quality galvanized steel to build our frac sand silos. The sand silos we manufacture combine the advantages of large capacity and lightweight. And its short construction period and small floor space can also largely save engineering costs.

Due to the unique spiral folding technology we used in our sand silo, its sealing performance is very good, it can prevent moisture and fire, and it is easy to realize mechanized production and automatic control.

We solve sand storage problems with efficient and professional skills, helping you to create higher value. If you have any thoughts on sand storage, please feel free to drop us an e-mail or leave us a message.

The Material Properties & Industrial Uses Of Sand

Material Properties Of Sand

The structure of different kinds of sand varies greatly. Some sand particles are of uniform thickness and some are of different sizes. Some sands have good roundness of debris, while others have sharp edges.

Sand is a loose material, but its hardness is large, and its chemical properties are stable under the surface environment. Sandstone, its weathering resistance is very strong, especially silica sandstone, its hardness can exceed granite.

Industrial Uses Of Sand

Today, the use of sand is very extensive. Due to its good hardness and stable chemical properties, and has been a very important building material since ancient times. It is mainly used in the fields of building construction, road construction, filtration, and smelting of supercapacitors, and is also the main material for glass production.

Sand is one of the main components of concrete and mortar and is a bulk material for civil engineering. It usually contains a small amount of soil, and the specific content of the soil is limited by the level of the building.

Introduction Of Grain Silos

Choosing the right storage container is the primary task for grain storage. AGICO steel silos are resistant to moisture, insects, and rodents, and they are easy to feed and discharge, it is hard to find a more suitable container for grain storage. Our grain silos are quite airtight, so it is suitable for insecticides. We provide a wide range of galvanized steel silo storage products with different capacities and serve complete storage solutions for agricultural markets around the world. After decades of experience in storage design and manufacturing, our company’s grain storage silos have become the preferred product for many users. No matter what kind of steel silo you need, we can customize it for you.

Our grain silos can well control the temperature and humidity in the silos, which can effectively prevent grain spoilage. Some people build concrete silos to store grain, however, concrete silos weigh 6 to 10 times more than steel silos. In order to store the same amount of grain, the investment in steel silos is only half that of a concrete silo. In comparison, our grain silo can help customers save a lot of money. Our grain silo is made of a high-quality galvanized steel sheets and can be used for 30 years without rust.

AGICO Grain Silos’ Featured Advantages

• Strong sealability: By using professional bending and jointing equipment, we ensure the high quality of each part of the silo body, which greatly improves the sealability of the grain silo. Therefore, using grain silos to store grains can meet the technical requirements of pesticides and fumigation.
• Built-in temperature measuring device: The grain silo is equipped with a temperature measuring device. When the temperature in the silo changes, the mobile blowing ventilation device will be activated to ensure storage safety. The silo can therefore be the safest and most effective method of storing grain and is not affected by outside influences.
• Easy to operate: high degree of automation, advanced loading and unloading equipment, convenient operation and management.
• We are very respectful of the customer’s requirements: we provide a series of grain silos to eliminate the risk of common insect pests and chemical residues in the grain storage process.

What Can Steel Silos Bring To Grain Storage System?

• Elevate your grain management to a new level with a complete grain silo system. AGICO offers silos with the highest heights and largest grain-holding capacities.
• More choices for customers to choose from. The capacity of a grain silo can reach 44,550 m³and it can fully meet your needs for grain storage.
• Many innovative designs are adapted to the grain silos to help you protect your valuable stored grains.
• Steel silo has excellent durability and performance. Its scientific design and the use of ventilation equipment ensure the quality and safety of the grain.

Grain Silo’s Application

Before storing food, impurities in food should be removed as much as possible. We usually use winnowing to remove pests, straws, weeds, sand, and other impurities. Food must be fully dried before it is stored. There are several methods to store grain, and AGICO Grain Silos can be applied to all of them:

• Ordinary storage: The grain must be cleaned and dried before being stored. The grain is then placed in an appropriate temperature grain silo and the silo should be sealed. People need to ensure good pest control, moisture protection, rodent control, and daily food inspections.
• Heat Seal Storage: This method is used at high temperatures in summer. The temperature of the grain after heat storage is increased to achieve the insecticidal effect.
• Natural Hypoxia Storage: Natural hypoxia storage is only applicable to newly harvested wheat. When using this storage method, clean the wheat first and then dry it in the sun. Dry wheat is placed in grain silos within a week. The feeding and discharging of grain silos are points that require special attention. During natural anoxic storage, workers must regularly inspect the grain silo to ensure that the entire silo is in good condition. If the silo is not tightly sealed or damaged, the effect of anoxic storage cannot be achieved.

Grain storage management is a very tedious task requiring workers to have sufficient time to regularly inspect food storage and carry out daily maintenance of grain silos. However, AGICO grain silos can help you save these tedious tasks.

With experienced and well-managed professional installation teams, our gain silo is durable and easy to operate. We have a telephone service every three months to remind customers of problems that may arise when using steel silos, and collect opinions or suggestions on product quality and related services. We promise to arrive at the scene within 36 hours of receiving feedback. AGICO Silo is your relieved choice.

AGICO designs and constructs storage solutions in the wastewater industry.

AGICO possesses professional silo design engineers, construction teams, and advanced equipment. The spiral folding technology and the double-seam system ensure our steel tanks’ great sealing performance. The selection of the best material also gives our steel tanks outstanding quality and long service lives. So AGICO steel tanks can be applied to store wastewater, sludge, or biogas in the wastewater treatment industry or environment protection.

AGICO insists on using superior-quality galvanized steel plates to construct wastewater treatment tanks. These high-quality steel are supplied by Handan Iron and Steel Co., galvanized with zinc, they grant the wastewater treatment tanks high corrosion resistance. Galvanized steel and stainless steel clad plates are both available to be chosen to build the storage tank.

As the key component of the wastewater treatment system, the wastewater treatment tank is widely used in wastewater treatment plants, government environmental protection projects, and light industries. The application of wastewater treatment tanks can greatly reduce the sewage discharge phenomenon and help solve water contamination problems.

• We provide free design for engineering and construction plans.
• We provide detailed maintenance guidance.
• We offer free wastewater treatment tank cleaning guidance.
• The warranty period is one year after installation and commissioning or 18 months after leaving the port.
• 7 days x 24 hours service, we will help you to solve any of your problems at any time.
• Routinely telephone surveys, help you avoid potential risks, and guarantee the long-lasting safety and reliability of our projects.

AGICO Cement International Engineering Co., Ltd is a professional company in China specializing in the construction of complete storage systems for wastewater treatment, cement, fly ash, grain, industrial powder, and chemicals. It’s one of the top 100 private enterprises in China building materials. We have several types of silo profiling units at present, such as SM30, SM40, and SM50, and our research for more advanced equipment has never stopped.

Today, we have successfully built superior-quality steel silos in Indonesia, Vietnam, Malaysia, Russia, Singapore, and Australia, etc.

Anyang AGICO Steel Silo is a leading supplier of cement storage tanks and auxiliary equipment in the cement industry. Our spiral steel tank is the most popular design of cement storage tank in Asia. We not only design and construct storage tanks, but also provide a series of auxiliary equipment and build the whole cement storage system.

Our cement storage tanks are built on-site with professional equipment, using galvanized steel coil as the material. The materials and equipment are both easy to transport and ship internationally.

Cement storage tanks are on-site storage containers, they are key equipment in the cement production lines, usually used for the storage and distribution of various cement mixtures.
Our storage tanks for cement storage are spiral-constructed steel-made silos. We use the most advanced tank manufacturing technology to design and construct every storage tank. With unique manufacturing methods, professional equipment, and mechanized operation, We produce high-quality products to meet different requirements.

• Superior material. The material used to build these tanks is a highly intense hot rolled double-sided galvanized coil. It has a beautiful appearance and guarantees the tank’s stable structure, corrosion resistance, and high air tightness.
• Short construction period. The spiral folding method allows us to construct steel tanks on-site. With professional constructing equipment and experienced teams, the tank folding speed could reach 3-5m/min, and a cement storage tank with a capacity of 1000 tons could be completed within 5-7 days.
• Economic price. Compared with traditional storage tank construction, AGICO’s tank construction method requires fewer labors, less construction time, and fewer materials, and makes the construction process very cost-effective.
• Long service life. The thickness of the spiral seaming edge is five times thick than the original steel plate, which greatly strengthens its resistance and extends the service life of the storage tanks. In addition, the high durability of our cement storage tanks also leads to a low maintenance cost. Besides, the galvanized steel coil with the feature of corrosion resistance will guarantee the silo’s long lifespan even under bad weather conditions.

• High flexibility. Flexible choices of dimensions are provided. The cement storage tank’s diameter can be selected from 3m-28m, and the height of 35m in theory to meet various demands.
• Little space is required. The minimum distance between the two storage tanks can be 500mm, which can make full use of space and reduce the tank’s coverage area.
• High convenience level. AGICO cement storage tank has a high degree of automation, together with advanced loading and unloading equipment. The customers can get great convenience when operating and managing our storage tanks.

The cement storage tanks we built have been widely applied in the NSP cement production lines and corollary grinding stations because of their strong technical strength and excellent performance, and have quickly obtained a large market share.

We have successfully completed more than 4000 storage tanks for cement storage in China, our cement storage solutions have been adopted to the NSP cement production line of some prominent cement industry groups like Tianshan Group, Qilianshan Group, Tongda Group, Washi Group, etc.

The advanced technology, the outstanding performance of our storage tanks, and the professional constructing team have earned us a high reputation and renown in China.

With our business growing, we desire to extend our business overseas. Now we are ready to provide excellent and economical storage solutions for customers around the globe.