Glass batch granulation and glass production method and fly ash and/or fly ash aluminum extraction residue to produce glass and glass products
A technology of glass batch materials and fly ash, which is applied in the field of glass products, glass production, and granulation methods of glass batch materials. It can solve problems such as step-by-step processing, and achieve the effect of reducing bubbles and improving glass quality
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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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