What is the specific gravity of coal gangue and what is the specific gravity of coal gangue

Coal gangueThe specific gravity is more than tons of cubic meters.

Coal gangue is a solid waste discharged from the coal mining process and coal washing process.

It is a kind of black-gray rock with lower 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 and SiO2, and it also contains Fe2O3, CaO, Mgo, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium, cobalt) in varying amounts.

Impact

So far, the use of coal gangue is not large enough. The impact on the environment is still very serious due to imperfect technology and unbalanced regional development, which is mainly manifested in the following aspects.

1) Affect the utilization of land resources Coal gangue dumps are mostly located near the wellhead, most of them are close to residential areas, and the large number of coal gangue stacks occupy a large amount of land area on the one hand, and on the other hand, it also affects the land resources larger than the stacking area, making the surrounding cultivated land barren and can not be used.

2) The open stacking of coal gangue in the polluted atmosphere will produce a large amount of dust, which is mainly due to the fact that the coal gangue stacked on the ground will be weathered and crushed after being exposed to the sun and rain for a long time; In addition, the gangue will disintegrate after absorbing water, so it is easy to produce dust.

Wind will deteriorate the quality of the atmosphere in the mining area. In addition, coal gangue contains combustibles such as residual coal, carbonaceous mudstone and waste wood, among which C and S can form the material basis for spontaneous combustion of coal gangue. The coal gangue business is stacked in the open air, and the heat inside the gangue mountain gradually accumulates over time.

When the temperature reaches the combustion point of the combustible, the residual coal in the gangue pile can spontaneously combust.

After spontaneous combustion, the internal temperature of the gangue mountain is 800 1000oC, which makes the gangue melt and release a large number of harmful gases such as CO, CO2, SO2, H2S, NOX, etc., among which SO2 is the main one.

Spontaneous combustion of a gangue mountain can last for more than ten years to several decades. The emission of these harmful gases not only reduces the ambient air quality around the gangue mountain.

It affects the health of residents in mining areas, and often affects the surrounding ecological environment, causing trees to grow slowly, increasing pests and diseases, reducing crop yields, and dying.

3) Hazardous water, soil, coal gangue, in addition to containing dust, SiO2, A12O3, Fe, Mn and other macro elements.

In addition, there are other trace heavy metal elements.

Such as PB, SN, AS, CR, etc., these elements are toxic heavy metal elements. When the coal gangue mountain is eroded by rainwater, acidic water is produced, which pollutes the surrounding land and water bodies.

When the gangue stacking of the gangue dump is unreasonable, the gangue pile is prone to slope instability, which leads to the collapse and slippage of the gangue pile, especially in the rainstorm season, this phenomenon is particularly common in mountainous areas, and debris flow is prone to occur.

This will affect the safety of farmland, rivers and people downstream.

The proportion of coal gangue is more than one ton of cubic meters.

The specific gravity of coal gangue, bulk density is.

Coal gangue is a solid waste emitted in the process of coal mining and coal washing, which is a black-gray rock with lower carbon content and harder than coal associated with coal seams in the process of coal formation.

The inorganic components of gangue are mainly oxides of silicon, aluminum, calcium, magnesium, iron and some rare metals.

The percentage of its chemical composition: SiO2 is 52 65;Al2O3 is 16 36;Fe2O3 is; cao is; MGO for; TiO2 is; P2O5 is; K2O+Na2O; v2o5.

In coal preparation, the general proportion of more than 10,000 cubic meters is called coal gangue, which is selected.

The proportion of coal gangue is more than one ton of cubic meters. 1.Coal gangue is a solid waste emitted in the process of splitting coal mining and coal washing, and it is a black-gray rock with lower carbon content and harder than coal in the process of coal formation.

2.The main components of coal gangue are Al2O3, SiO2 and Fe2O3, CaO, Mgo, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium, cobalt). 3.

The density of coal gangue is generally more than a ton of cubic meters.

Summary. The proportion of gangue in coal depends on the mining method and geological conditions of the coal mine. Generally speaking, open-pit coal mines have a high proportion of coal gangue, which can reach 30% to 40%.

The proportion of gangue in underground coal mines is relatively low, usually less than 10%. In addition, the proportion of gangue in different types of coal is also different. For example, the proportion of gangue in bituminous coal is relatively high, while the proportion of gangue in lignite is relatively low.

Coal gangue is a waste generated in the process of coal mining and utilization, which needs to be properly treated and utilized to reduce environmental pollution and resource waste.

The proportion of gangue in coal depends on the mining method and geological conditions of the coal mine. Generally speaking, the coal gangue in open-pit coal mines is higher than that of liquid stoves, which can reach 30% to 40%. The proportion of gangue in underground coal mines is relatively low, usually less than 10%.

In addition, the proportion of gangue in different types of coal is also different. For example, the proportion of gangue in bituminous coal is relatively high, while the proportion of gangue in lignite is relatively low. Coal gangue is a waste generated in the process of coal mining and utilization, which needs to be properly treated and utilized to reduce environmental pollution and resource waste.

Can you tell us more about that?

Coal gangue refers to the waste generated in the process of coal mining and utilization, including non-coal parts such as coal rock, limestone, mudstone, argillaceous sandstone, volcanic rock, etc. The proportion of gangue in coal depends on factors such as the mining method, the nature of the coal seam, and geological conditions. Generally speaking, open-pit coal mines have a high proportion of coal gangue, usually 30% to more than 40%; The proportion of coal gangue in underground coal mines is relatively low, generally less than 10%.

In addition, the proportion of gangue in different types of coal is also different, the proportion of coal gangue in bituminous coal is relatively high, about 20%, while the proportion of coal gangue in lignite is low, about 10%. The treatment and utilization of coal gangue is of great significance to environmental protection and resource recycling. At present, the treatment of coal gangue mainly includes landfills, pits and tailings ponds.

Among them, landfill is a common coal gangue treatment method, but it will occupy a large amount of land resources, and will lead to problems such as land subsidence and groundwater pollution. Therefore, other gangue treatment methods should be actively explored, such as tailings pond technology. In addition, in the process of processing coal gangue, valuable minerals and elements can also be extracted from it through acid leaching, biological extraction, physical methods and other means, and reuse and **.

In short, the proportion of coal gangue is an important factor affecting coal development and environmental protection, and effective measures need to be taken in the process of coal mining and utilization to reduce the generation of coal gangue and properly treat and utilize.

A 30-centimeter-thick coal seam contains 50% of the gangue.

Dear, I am glad to answer for you: 30 cm thick coal seam contains 50% of gangue, and his specific gravity is more than a ton of cubic meters. The development of coal gangue industry, coal gangue is a solid waste discharged in the process of coal mining and coal washing, and is a kind of black-gray rock with low carbon content and harder than coal that is associated with coal seam in the process of coal formation.

Including the gangue in the roadway excavation process, the gangue mined from the roof, bottom plate and interlayer in the mining process of Zhaomao Cong, and the washing gangue picked out in the coal washing process. Its main components are Al2O3 and SiO2, and it also contains Fe2O3, CaO, Mgo, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium, cobalt) in varying quantities.

Hello friends, Coal gangue is a waste made up of coal and minerals, which contains a variety of chemicals, including alkali. However, the alkali content in different types of gangue will vary, and in general, its content is between 10% and 30%. The alkali content mainly depends on the mineral content in the gangue, such as sodium, potassium, calcium and other elements.

These elements react with coal at high temperatures to form some alkali-containing compounds. The organic matter in the gangue will also decompose to produce alkaline substances, further increasing its alkaline content. The alkali content in coal gangue is high, which may cause harm to the human body and the environment if used directly or improperly handled.

When using or handling coal gangue, it is necessary to take appropriate safety measures to avoid damage to people, people and the environment. I hope mine can help you and have a great life! <>

Summary. The alkali content in coal gangue varies greatly depending on the type of coal, the place of origin and the mining method, and is generally 1%-20%. The main soluble components in gangue are water, carbonate minerals and sulfate minerals.

Among them, carbonate minerals are the highest, followed by sulfate minerals, chloride minerals and oxide minerals. The soluble components in coal gangue are extremely unevenly distributed in nature, and there are even no soluble components in some areas. The content of soluble components in coal gangue in northern China is low, and the content in southern China is high, generally 5%-10%, and individual as high as 20%, such as the content of soluble components in coal gangue in Liuzhou, Guangxi.

The alkali content in coal gangue varies greatly depending on the type of coal, the place of origin and the mining method, and is generally 1%-20%. The main soluble components in gangue are water, carbonate minerals and sulfate minerals. Among them, carbonate minerals are the highest, followed by sulfate minerals, chloride yield minerals and oxide minerals.

The soluble components in coal gangue are extremely unevenly distributed in nature, and there are even no soluble components in some areas. The content of soluble components in coal gangue in northern China is low, and the content of soluble components in coal gangue in southern high formula areas is high, generally 5%-10%, and some are as high as 20%, such as the content of soluble components in coal gangue in Liuzhou, Guangxi.

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<> supplementary expansion: coal gangue is a solid waste generated in the process of coal mining, which refers to impurities such as rocks, high-source soil, and plant residues mixed with coal seams in the process of coal mining. Because it contains a large number of heavy metals, harmful gases and chemicals, it has a serious impact on the environment and human health.

Therefore, the treatment and utilization of coal gangue has become an important environmental protection issue. At present, coal gangue is mainly disposed of by landfill and incineration. Among them, landfill is to bury coal gangue in the ground, but this method will produce a large amount of greenhouse gases and pollutants, which will have an impact on the environment; Incineration, on the other hand, burns coal gangue at high temperatures, which can reduce volume and weight, and can also produce electricity and heat.

However, incineration also produces a large amount of carbon dioxide and other harmful gases, which pollutes the environment. Therefore, how to effectively deal with and utilize coal gangue is a problem that requires continuous attention and research.