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Methods of glass batch granulation and glass production, a method of producing glass by utilizing fly ash and/or fly ash aluminum-extraction slag and a glass product

A technology for extracting aluminum from glass batch materials and fly ash, which is applied in glass production, glass manufacturing equipment, glass furnace equipment, etc., can solve problems such as step by step, and achieve the effect of reducing bubbles and improving glass quality

Active Publication Date: 2017-11-17
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to realize the non-compression granulation of glass batch materials in the existing glass melting technology, and overcome the defects of step-by-step pre-decomposition and granulation of glass batch materials, and in order to provide suitable for powdered coal A method for preparing glass from ash and fly ash extracting aluminum residue as raw material provides a method for granulating glass batch materials and producing glass as well as a method for producing glass and glass products from fly ash and / or fly ash extracting aluminum residue

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] (1) Prepare water glass and carry out carbonation decomposition

[0080] According to the method of Example 1 in CN103819086A, the above-mentioned high-alumina fly ash is added to a sodium hydroxide solution with a concentration of 20% by weight, and stirred and reacted for 1 hour at a temperature of 120° C. to mix, wherein the high-alumina fly ash and sodium hydroxide The mass ratio is 1:0.6.

[0081] Filter to obtain the pre-desilication mother liquor and fly ash desiliconization residue. The pre-desilication mother liquor is mainly composed of sodium silicate and sodium aluminate, SiO 2 / Al 2 o 3 The mass ratio is 65.23:1. Carbon dioxide is introduced into the pre-desilication mother liquor for carbonation decomposition, and when the pH of the pre-desilication mother liquor drops to about 8.5, the introduction of carbon dioxide is stopped to obtain a slurry containing silicic acid precipitate.

[0082] (2) Pre-decomposition and granulation

[0083] Filter the s...

Embodiment 2

[0091] (1) Prepare water glass and carry out carbonation decomposition

[0092] According to the method of Example 1 in CN104341106A, the above-mentioned high-alumina fly ash aluminum extraction residue A is added to a sodium hydroxide solution with a concentration of 15% by weight, stirred at a temperature of 70°C for 3 hours for leaching, and the high-alumina powder SiO in coal ash extraction residue A 2 Calculated, the molar ratio of the high aluminum fly ash residue A to sodium hydroxide is 1:2.

[0093] Filter to obtain leaching solution and leaching residue. SiO in leaching solution 2 / Al 2 o 3 The weight ratio is 98:1, and the silica extraction rate is 87%. Carbon dioxide is introduced into the leaching liquid for carbonation and decomposition, and the carbon dioxide feeding is stopped when the pH of the leaching liquid is 8.3 to obtain a slurry containing silicic acid precipitates.

[0094] (2) Pre-decomposition and granulation

[0095] Filter the silicic acid p...

Embodiment 3

[0103] (1) Prepare water glass and carry out carbonation decomposition

[0104] According to the method of Example 1 in CN104341107A, the above-mentioned high-aluminum fly ash extracting aluminum residue B is mixed with sodium carbonate, roasted at 700°C for 90min to obtain roasted clinker, and the SiO in the aluminum residue B is extracted with high-aluminum fly ash 2 with Al 2 o 3 In terms of molar difference, the molar ratio of aluminum extraction residue B from high aluminum fly ash to sodium carbonate is 1:1.2.

[0105] The roasted clinker was leached with water, stirred at 75°C for 20 minutes, and filtered to obtain sodium silicate leaching solution and leaching residue. SiO in leaching solution 2 / Al 2 o 3 The weight ratio of the silica is 150:1, and the extraction rate of silica is 91%. Carbon dioxide is introduced into the sodium silicate leaching solution for carbonation and decomposition, and when the pH of the sodium silicate leaching solution is 8.6, the int...

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Abstract

The invention relates to the field of granulation of a batch used for glass melting, and discloses methods of glass batch granulation and glass production, a method of producing glass by utilizing fly ash and / or fly ash aluminum-extraction slag and a glass product. The method of granulation includes (1) mixing a silicic acid precipitate, a sodium oxide source, a calcium oxide source and a water phase to form slurry; and (2) roasting the slurry under stirring to subject the silicic acid precipitate, the sodium oxide source and the calcium oxide source in the slurry to drying, pre-decomposition and granulation under the roasting condition to obtain glass batch granules. Glass batch granulation in a non-compression manner is achieved, and pre-decomposition and granulation of the glass batch can be completed simultaneously, thus simplifying a glass melting process, and increasing the melting amount of a glass kiln. Obtained molded glass has reduced air bubbles and improved quality.

Description

technical field [0001] The invention relates to the field of granulation of batch materials for glass melting, in particular to a method for granulating glass batch materials, a method for producing glass, and a method for producing glass by using fly ash and / or fly ash to extract aluminum residue , and glass products. Background technique [0002] During the production of glass by the melting method, preheating, pre-decomposing and granulating the glass batch materials will be beneficial to the production of high-quality glass. [0003] CN203295334U discloses a glass batch granulator. The glass batch material is made into a dense block by setting double rollers to squeeze the glass batch material. [0004] CN101913752B discloses an on-line preparation method of glass batch materials. After the batch materials are added to adhesive and water, stirred and mixed evenly, they are pressed to a density of 1.9-2.5t / m 3 , Block materials with a size of 300×300×10~600×600×30mm ar...

Claims

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Application Information

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IPC IPC(8): C03C6/00C03C3/087C03B1/00C03B5/00
CPCC03B1/00C03B5/00C03C1/002C03C3/087Y02P40/50
Inventor 赵利军孙琦王宝冬王晓欢肖永丰刘晓婷李海千郭强
Owner CHNA ENERGY INVESTMENT CORP LTD
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