How to prepare coal in coal gangue? Can the leftover gangue be used to make bricks?

The coal content of coal gangue generally has to reach 700---2000, you say washing gangue mountain, as long as the spontaneous combustion is not very powerful, there must be money to be made, because I am doing this, I understand. Washing this will definitely not lose money, and you may be able to make a lot of money. After washing the coal, the remaining gangue is generally sent to the brick factory, you say that the brick-making is unqualified may contain dolomite, you can jump a little, or if the account is cost-effective, you can go to a crusher, the remaining gangue is crushed, and sold to the coal for carbon power generation.

This kind of equipment, you can go to Linyi, Henan, Hebei have, you can inquire about it, invest in a set of machines about 80,000, the daily output depends on the quality of your coal gangue, *** wash fast, not good to wash slowly, generally 8 hours 100 tons is no problem.

For whether it is cost-effective to select coal from gangue, it is related to several factors: raw material cost, processing cost, gangue coal content, product coal price, with these can calculate whether it is cost-effective, and the processing cost is about 4 yuan tons. For the natural problem of gangue, gangue generally contains sulfur, the higher the sulfur content, the easier it is to spontaneously combust, spontaneous combustion is from the bottom of the internal combustion (internal temperature is high), gangue will be spontaneously combusted after a long time.

What you said has burned to the surface, which means that the inside is basically spontaneously combusted. There won't be much left. For gangue bricks, as long as it is gangue can be used to make bricks, gangue bricks generally use clay, gangue powder can play a role in combustion, saving coal.

Gangue coal preparation is very simple, single-stage jigging can be used, very ordinary equipment, the processing capacity is not to worry, how large the model is.

The previous few have been, I would like to add, 1. The coal content of coal gangue is more than 20% and has investment value. 2. The main thing is to see whether the surface of the gangue mountain is yellow. 3. Bricks can be made.

There is no other use. The quality of brick-making is not up to standard because of the large coal content in the gangue, which leads to deformation. 4. I have seen in the coal preparation technology magazine that the current application of gangue equipment is more than the FGX composite dry coal separator produced by Tangshan Shenzhou Machinery Co., Ltd., which has less investment, fast production, no water for coal preparation, and environmental protection and economy.

5. The investment is calculated according to the selected amount, and you can contact the manufacturer for details.

The technology of coal gangue brick making is very mature, regardless of the coal content. If the calorific value is almost appropriate, you can use all coal gangue to make bricks, and truly make billets without soil, burn bricks without coal, energy saving and environmental protection, and the national policy vigorously advocates. I am a professional in coal gangue bricks and tunnel kiln sintered bricks.

Coal gangue is the debris left over from coal preparation, and coal can no longer be prepared from it; The rest can not be made into bricks.

If the sulfide content, CBR value, free expansion rate and other indicators do not exceed the standard, it can be used as highway subgrade filler.

Hello, I went to work in the coal preparation plant on the mine, near the coal preparation plant, and now our company has built a brick factory, I heard that the profit is quite large, I think it should be able to invest.

You're the best person.

I am also a brick factory.

1. **Coal and pyrite: through a simple process, good coal is washed from coal gangue, inferior coal is selected from it through screening, and pyrite is sorted out at the same time.

2. Power generation: using a mixture of medium coal and gangue to generate electricity, generally with a calorific value of 3500 kcal per kilogram; When the fire power is insufficient, heavy oil is used to support the combustion. The Federal Republic of Germany and the Netherlands have built coal-mine power plants and coal preparation plants together to generate electricity from medium coal, coal slime and coal gangue.

3. Manufacturing building materials: coal gangue replaces clay as a raw material for brick making, which can reduce the need to dig fertile land.

4. Burning bricks: The use of the combustibles of the coal gangue itself can save coal and reduce resources.

5. Other uses: coal gangue can also be used to produce low calorific value gas, make ceramics, make soil amendments, or for paving, underground filling, and ground filling for land.

Make refractory materials.

**Medium Coal. Make ceramsite.

Make aggregates. Gangue bricks, but the gangue calcium content should not be too high.

Distribution of coal. High sulfur content to do sulfuric acid.

Coal gangue is the waste residue produced in the production process of coal mines, including the excavation gangue produced during the excavation of rock roadways, the gangue mined from the roof, bottom plate and rock interlayer sandwiched in the coal seam during the coal mining process, and the washing gangue discharged during the production process of the coal washing plant. Generally, the gangue discharged from the coal mining process and the production process of the coal washing plant is called coal gangue.

After years of mining, the abandoned coal gangue is piled up. Since the 50s of the 20th century, due to the development of mining mechanization and the gradual deterioration of coal seam mining conditions, the gangue discharged from coal mines has increased significantly. Over the years, China's coal system has accumulated more than 1 billion tons of coal gangue, and now it will discharge nearly 100 million tons every year, of which about 15 million tons are washed gangue.

The accumulation of coal gangue not only occupies a large amount of land, but also the sulfide contained in the coal gangue will pollute the air and water after emitting, causing serious consequences. The pyrite (Fes2) contained in coal gangue is easily oxidized by air, and the heat released can promote the weathering and spontaneous combustion of coal contained in coal gangue. When the gangue is burned, it emits an unpleasant smell and harmful smoke, which increases the number of chronic bronchitis and asthma patients in the nearby residents, and the surrounding trees lose their leaves and reduce crop yields.

The gangue mountain is washed by rainwater, which often silts up the riverbed of nearby rivers and pollutes the river water. There was a coal gangue landslide accident abroad, which buried a small school under the valley and caused many accidents. Therefore, solving the problem of coal gangue treatment and utilization is also an important topic for coal mining and environmental protection departments.

Summary. Dear, bricks made of gangue can be landfilled.

Can bricks made of coal gangue be landfilled?

Dear, bricks made of gangue can be landfilled.

The Environmental Protection Bureau, the Natural Resources Bureau, and the Forestry and Grassland Bureau are not allowed.

Pro, the Environmental Protection Bureau, the Natural Resources Bureau, and the Forestry and Grassland Bureau are not allowed, and they will pollute the environment.

Coal gangue is a solid waste discharged in the process of coal mining and coal washing, which is a kind of black-gray rock with low carbon content and harder than coal that is associated with the coal seam in the process of coal formation.

Including the gangue in the roadway excavation process, the gangue mined from the roof, floor and interlayer in the mining process, and the gangue picked out in the coal washing process. Its main components are Al2O3, SiO2, coal gangue is mainly used in the production of gangue cement, concrete light aggregates, refractory bricks and other building materials, in addition to being used for coal, coal and gangue mixed firing power generation, the preparation of crystalline aluminum chloride, water glass and other chemical products and the extraction of precious and rare metals, can also be used as fertilizer.

So you say it can be landfilled?

Dear, I mean a small amount can be landfilled.

Doesn't that mean you didn't say it?

Dear, according to the regulations, it is not allowed to be landfilled.

Summary. Hello dear! We'll be happy to answer for you.

What are the raw materials for coal gangue bricksAnswer: The ratio of raw materials is: cement + coarse and fine aggregate (sand and gravel mixed concrete) + water (drinking water is generally used for mixing commercial concrete) + admixtures (the types of mineral admixtures are:

Ground fly ash, fine slag, fine zeolite and silica fume and their compounds), products include floor tiles, wall tiles, slope protection bricks, such as: color surface (layered cloth) and full-body floor tiles, dock chain bricks, grass bricks, water conservancy bricks, hollow blocks, perforated bricks, unburned standard bricks, etc.

What are the raw materials for making bricks from gangue.

Hello dear! We'll be happy to answer for you. What are the raw materials for making bricks from coal gangueA:

The ratio of raw materials is: cement + coarse and fine aggregate (sand and gravel mixed concrete) + water (drinking water is generally used for mixing commercial concrete) + admixtures (the types of mineral admixtures are: grinding fly ash, grinding slag, grinding fine zeolite and silica fume and their compounds), and the products include floor tiles, wall tiles, slope protection bricks, such as:

Color surface (layered fabric) and full-body floor tiles, dock interlocking bricks, grass planting bricks, water conservancy bricks, hollow blocks, perforated bricks, unburned standard bricks, etc.

What is the proportion.

According to the weight percentage, coal gangue accounts for 40%, clay accounts for 25%, water slag accounts for 15%, construction waste accounts for 10%, sand accounts for 5%, and chemical composition elements account for 5%.

Pressed bricks, not fired bricks.

The ratio is generally 1 part of coal gangue and 2 parts of shale and other raw materials, that is, 1:2 oh kiss.

Summary. Hello dear! No, you cannot. With coal gangue containing limestone, it can be used to fire red bricks that are prone to bursting.

Can gangue containing limestone be used to fire red bricks.

Hello dear! No, you cannot. With coal gangue containing limestone, it can be used to fire red bricks that are prone to bursting.

Eight capped buildings in a resettlement housing community in Zhengzhou City, Henan Province, were demolished. After the inspection of the relevant departments, the coal gangue sintered perforated bricks used in some buildings in the community have burst in a large area, the wall bricks have a large burst depth, some bricks have lost their strength, there are serious safety hazards, and the safety of the main structure of the project has been seriously affected. Who is responsible for the problem is not the object of our research, just on the problem of coal gangue sintered perforated brick bursting, after preliminary investigation and analysis, it is because the calcium oxide content in this batch of coal gangue sintered perforated bricks exceeds the standard.

After the coal gangue bricks are produced for a period of time, the calcium oxide in it absorbs the moisture in the air due to contact with the air, generates powdered calcium hydroxide and is accompanied by a large volume expansion, resulting in huge internal stress and serious harm to the bricks, that is, the bricks are pulverized and fall off. In this way, it can be said that the culprit of this accident should be "limestone". In fact, such incidents have been reported by relevant ** as early as before, but in the face of interests, they have not attracted enough attention from relevant units such as production and supervision.

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Peace and joy. Hello dear, glad to answer for you, what can gangue be used for? A Coal gangue can be used to produce gangue cement, concrete lightweight aggregates, refractory bricks and other building materials, in addition to coal, coal and gangue mixed firing power generation, the preparation of crystalline aluminum chloride, water glass and other chemical products and the extraction of precious and rare metals, can also be used as fertilizer.

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Wishing you well; Have a good life and all the best! If you are satisfied with my service, please give a thumbs up, and once again wish you all the best! Peace and joy.

Summary. After the gangue is burned, the fine ash captured from the flue gas is fly ash, but usually fly ash refers to the fine ash produced by coal burning.

Depending on the fuel and the different combustion conditions, the fly ash properties will also be different. But it's all fly ash.

Fly ash from coal-fired power plants vs. fly ash from gangue power plants.

Can coal gangue be used to make fly ash.

After the coal gangue is burned, the fine ash captured from the flue gas is fly ash Huailu, but usually fly ash refers to the fine ash produced by coal burning. The fuel is different, the combustion spike conditions are different, and the fly ash properties will be different. But it's all fly ash.

Coal-fired power plants guess Mingqiao fly ash vs gangue power plant fly ash only.

Can calcined gangue be made into fly ash after grinding?

Theoretically, yes.

Ask about custom messages].

Summary. It should be said that it is completely impossible to replace fly ash. Coal gangue and fly ash after sintering are completely different things. It is estimated that the same composition will not exceed 30%, and if it is fly ash as a concrete admixture, then the proportion of the active ingredient silica content may be even worse.

Personally, I think that the main component of sintered coal gangue is likely to be lime, of course, the coal quality in each region is different, and the composition is also different.

Can coal gangue be used to make fly ash.

It should be said no.

I'm sorry I don't understand, but can you elaborate on that?

Although the main element of both is silicon, it cannot be completely replaced.

Please wait patiently for three minutes, we are sorting it out, and we will answer you immediately, and please don't end the consultation.

It should be said that it is completely impossible to replace fly ash. The sintered coal gangue and fly ash are completely different things. It is estimated that the same composition will not exceed 30%, if it is a pulverized coal reunion pants ash as a concrete concrete admixture, then the content proportion of the active ingredient silica may be even worse.

Personally, I think that the main component of sintered coal gangue is likely to be lime, of course, the coal quality in each region is different, and the composition is also different.

Thank you!