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Method for preparing soda-lime glass from raw material alkali residue byproduct produced during firing of low-modulus water glass with coal gangue acid-leached residue-sodium sulfate

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: 2015-12-16
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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  • Method for preparing soda-lime glass from raw material alkali residue byproduct produced during firing of low-modulus water glass with coal gangue acid-leached residue-sodium sulfate

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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 The alkali residue produced by water glass is dried by a flash dryer, and its composition is analyzed. The result is that it contains 48.8% 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%, sodium oxide 15...

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 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 48.9% 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 di...

Embodiment 3

[0035] Such as figure 1 shown, as 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 71.90...

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Abstract

The invention relates to the technical field of recycling of coal-series solid waste, in particular to a method for preparing soda-lime glass from a raw material alkali residue byproduct produced during firing of low-modulus water glass with coal gangue acid-leached residue-sodium sulfate. The alkali residues are introduced into soda-lime glass production, so that sodium sources in a raw material formula completely come from the alkali residues, the cost is lower in the soda-lime glass preparation process, calcium in the alkali residues exists in the form of calcium silicate, the alkali residues are used as raw materials to produce the soda-lime glass, meanwhile, lime dissociation energy and calcium silicate chemical combination energy can be saved, and energy consumption in the soda-lime glass preparation process is further reduced; the main phase Na2SiO3*CaSiO3 of the alkali residues, which is an eutectic mixture of silicon dioxide, sodium oxide and calcium oxide, is combined, the melting point during glass melting is reduced, mass transfer and substance homogenization among reactants are promoted, the chemical combination energy of sodium silicate and calcium salt is reduced, and the production energy consumption of the soda-lime glass is reduced.

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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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
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