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A method for preparing soda-lime glass from coal gangue acid leaching residue-sodium sulfate firing low-modulus water glass by-product alkali residue as raw material

A soda lime glass and acid leaching slag technology, applied in silicate, alkali metal silicate and other directions, can solve the problems of environmental pollution, difficult to reuse, affect the pH value of soil layer, etc., to reduce energy consumption, reduce silicic acid The effect of calcification energy saving and lime decomposition energy saving

Inactive Publication Date: 2017-11-03
GUIZHOU PROVINCE PAN COUNTY ZISENYUAN GRP IND DEV INVESTMENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that in the prior art, the comprehensive utilization of coal gangue in the field of glass preparation has been relatively common, but in the above-mentioned preparation process, a large amount of alkali residues are discharged, which makes the comprehensive utilization and resource recovery In the process of using coal gangue, new alkali slag waste is produced, and the alkali slag waste contains a large amount of alkali, which makes it difficult to be reused, and if it is placed in the environment for stacking, it will Lead to affect the pH value of the soil layer, causing serious pollution to the environment

Method used

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  • A method for preparing soda-lime glass from coal gangue acid leaching residue-sodium sulfate firing low-modulus water glass by-product alkali residue as raw material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a method for preparing soda-lime glass with coal gangue acid leaching residue-sodium sulfate firing low-modulus sodium sulfate byproduct alkali residue as raw material, will use coal gangue acid leaching residue by-product sodium sulfate firing low modulus After the alkali residue produced by water glass is dried by a flash dryer, it is subjected to component analysis, and the result is that it contains 48.8% of silicon dioxide, 31.88% of sodium oxide, 15.25% of calcium oxide, and the content of aluminum oxide is 2.35%. %, the content of magnesium oxide is 0.80%, the content of ferric oxide is 0.41%, the content of potassium oxide is 0.53%, and others. After it is stored in the warehouse, it is ready for use;

[0026] Get above-mentioned alkali residue 110kg, take by weighing siliceous sand 85kg, unslaked lime 0kg, after it is mixed uniformly, obtain mixture; And carry out component analysis to mixture, wherein contain silicon dioxide 72.32%,...

Embodiment 2

[0030] Such as figure 1 As shown, a method for preparing soda-lime glass with coal gangue acid leaching residue-sodium sulfate firing low modulus water glass by-product alkali residue as raw material, will use coal gangue acid leaching residue by-product sodium sulfate firing low modulus The alkali residue produced by water glass is dried by a flash dryer, and its composition is analyzed. The result is that it contains 48.9% of silicon dioxide, 30.22% of sodium oxide, 16.68% of calcium oxide, and the content of aluminum oxide is 2.35%. %, the content of magnesium oxide is 0.81%, the content of ferric oxide is 0.46%, the content of potassium oxide is 0.65%, and others. After it is stored in the warehouse, it is ready for use;

[0031] Take 100kg of the above-mentioned alkali residue, weigh 95kg of silica sand, and 0-4 parts of quicklime, and mix them uniformly to obtain a mixture; and analyze the composition of the mixture, which contains 71.90% of silicon dioxide, 15.11% of s...

Embodiment 3

[0035] Such as figure 1 as shown in figure 1As shown, a method for preparing soda-lime glass with coal gangue acid leaching residue-sodium sulfate firing low modulus water glass by-product alkali residue as raw material, will use coal gangue acid leaching residue by-product sodium sulfate firing low modulus After the alkali residue produced by water glass is dried by a flash dryer, it is subjected to component analysis, and the result is that it contains 49% of silicon dioxide, 29.22% of sodium oxide, 17.68% of calcium oxide, and the content of aluminum oxide is 1.35%. %, the content of magnesium oxide is 0.81%, the content of ferric oxide is 0.46%, the content of potassium oxide is 0.65%, and others. After it is stored in the warehouse, it is ready for use;

[0036] Take 100kg of the above-mentioned alkali residue, weigh 95kg of silica sand, and 0-4 parts of quicklime, and mix them uniformly to obtain a mixture; and analyze the composition of the mixture, which contains 71....

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Abstract

The invention relates to the technical field of resource utilization of coal-based solid waste, in particular to a method for preparing soda-lime glass by using the acid leaching residue of coal gangue-sodium sulfate as a raw material for the by-product alkali residue of low modulus water glass. The residue is introduced into the production of soda-lime glass, so that the sodium source in the raw material formula is all derived from the alkali residue, which makes the cost of the soda-lime glass production process lower, and the calcium in the alkali residue also exists in the form of calcium silicate , when using it as a raw material to produce soda-lime glass, the decomposition energy of lime and the combination energy of calcium silicate are both saved, thereby reducing the energy consumption in the preparation process of soda-lime glass; the main phase combined with alkali residue is Na2SiO3. CaSiO3 is a eutectic product of silicon dioxide, sodium oxide, and calcium oxide, which reduces the melting point of the glass when it is melted, and also promotes the mass transfer and homogenization of the reactants, reducing the concentration of sodium silicate and The chemical combination energy of calcium salt reduces the production energy consumption of soda lime glass.

Description

technical field [0001] The invention relates to the technical field of resource utilization of coal-based solid waste, in particular to a method for preparing soda-lime glass by using coal gangue acid leaching residue-sodium sulfate firing low-modulus water glass by-produced alkali residue as a raw material. Background technique [0002] Coal gangue is solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal associated with the coal seam during the coal formation process. Due to the large amount of domestic coal gangue discharge every year, and the consumption of coal gangue recycling process is relatively small, so most of the coal gangue treatment process adopts the method of landfill and stacking, which not only causes It has not only caused environmental damage, but also caused a lot of chemical raw material resources to be wasted. [0003] For this reason, there are a large amou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C6/04C01B33/32
Inventor 夏举佩杨劲黄静耿锐心范仲云吕继国师垒垒催井泉
Owner GUIZHOU PROVINCE PAN COUNTY ZISENYUAN GRP IND DEV INVESTMENT