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A method for producing foamed glass-ceramics by utilizing high-silicon vanadium tailings and high-magnesium phosphorus tailings

A technology of foamed glass-ceramics and high-magnesium-phosphorus tailings, which is applied in the field of foamed glass-ceramics production, can solve the problems of occupying land, low product added value, polluting the environment, etc. The effect of high folding strength

Active Publication Date: 2020-06-16
东莞市银泰玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country, the comprehensive utilization rate of other bulk waste such as fly ash and coal gangue exceeds 50%, while the utilization rate of tailings is less than 20%, and the utilization of tailings is mainly concentrated in road filling, production of cement products, etc., and the added value of products lower
Most of them are naturally stockpiled, occupying land, polluting the environment, and posing serious hidden dangers of geological disasters

Method used

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  • A method for producing foamed glass-ceramics by utilizing high-silicon vanadium tailings and high-magnesium phosphorus tailings

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Experimental program
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Effect test

Embodiment 1

[0025] A method for producing foamed glass-ceramics by utilizing high-silicon-vanadium tailings and high-magnesium-phosphorus tailings, comprising the following steps:

[0026] (1) Weigh raw materials according to the following parts by weight: 35 parts of high-silicon vanadium tailings, 20 parts of high-magnesium phosphorus tailings, 0.4 parts of sodium sulfate, 0.2 parts of calcium carbonate, 3 parts of sodium phosphate, 5.8 parts of calcium fluoride, zinc oxide 1.4 parts, 2.8 parts of sodium nitrate;

[0027] (2) The raw material is pulverized and ball-milled to a particle size of 100 mesh, and mixed uniformly;

[0028] (3) Heating the uniformly mixed raw materials to 1500°C, keeping it warm for 1 hour, and melting it into a uniform foam glass liquid, the foam glass liquid is formed and annealed to obtain block glass;

[0029] (4) Raise the temperature of the block glass to 950°C at a rate of 5°C / min and keep it warm for 0.5h; then cool it down to 650°C at a rate of 20°C / m...

Embodiment 2

[0031] A method for producing foamed glass-ceramics by utilizing high-silicon-vanadium tailings and high-magnesium-phosphorus tailings, comprising the following steps:

[0032] (1) Weigh raw materials according to the following parts by weight: 45 parts of high silicon vanadium tailings, 30 parts of high magnesium phosphorus tailings, 3.5 parts of sodium sulfate, 2 parts of calcium carbonate, 7 parts of sodium phosphate, 6.8 parts of calcium fluoride, zinc oxide 4.1 parts, 4.1 parts of sodium nitrate;

[0033] (2) The raw material is pulverized and ball-milled to a particle size of 300 mesh, and mixed uniformly;

[0034] (3) Raise the temperature of the uniformly mixed raw materials to 1600°C, keep them warm for 2 hours, and melt them into a uniform foam glass liquid. The foam glass liquid is formed and annealed to obtain block glass;

[0035] (4) Raise the temperature of the block glass to 1250°C at a rate of 10°C / min and keep it warm for 2 hours; then cool it down to 760°C ...

Embodiment 3

[0037] A method for producing foamed glass-ceramics by utilizing high-silicon-vanadium tailings and high-magnesium-phosphorus tailings, comprising the following steps:

[0038] (1) Weigh raw materials by weight: 40 parts of high silicon vanadium tailings, 25 parts of high magnesium phosphorus tailings, 2 parts of sodium sulfate, 1.2 parts of calcium carbonate, 5 parts of sodium phosphate, 5.9 parts of calcium fluoride, 3.2 parts of zinc oxide part, 3.4 parts of sodium nitrate;

[0039] (2) The raw material is pulverized and ball-milled to a particle size of 200 mesh, and mixed uniformly;

[0040] (3) Warm up the uniformly mixed raw materials to 1550°C, keep them warm for 1.5 hours, and melt them into a uniform foam glass liquid. The foam glass liquid is formed and annealed to obtain block glass;

[0041] (4) Raise the temperature of the bulk glass to 1100°C at a rate of 7°C / min and keep it warm for 1.2h; then cool it down to 720°C at a rate of 25°C / min and anneal for 3h; cool...

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Abstract

The invention provides a method for producing foam microcrystalline glass by using high silicon and vanadium tailings and high magnesium and phosphate tailings, and relates to the technical field of production of foam microcrystalline glass. The method mainly comprises the following steps of (1) weighing the raw materials in parts by weight: high silicon and vanadium tailings, high magnesium and phosphate tailings, a foaming agent, a foam stabilizing agent and an additive; (2) performing crushing and ball milling on the raw materials, and uniformly mixing; (3) heating the uniformly mixed raw materials to 1500 to 1600 DEG C, keeping warm for 1 to 2h, melting into uniform foam glass liquid, and forming and annealing the foam glass liquid, so as to obtain a glass block; (4) heating the glass block from room temperature to 950 to 1250 DEG C, and keeping warm for 0.5 to 2h; then, cooling to 650 to 760 DEG C, and annealing for 2 to 4h; cooling to 20 to 35 DEG C, so as to obtain the foam microcrystalline glass. The method has the advantages that the production technology is simple, and the implementing is easy; by fully utilizing solid wastes, the production cost is reduced; the compressive strength and breaking strength of a finished product are high, the heat conduction coefficient is small, and the weight is light.

Description

[0001] field of invention [0002] The invention belongs to the technical field of production of foamed glass-ceramics, and in particular relates to a method for producing foamed glass-ceramics by using high-silicon-vanadium tailings and high-magnesium-phosphorus tailings. Background technique [0003] Foamed glass-ceramic is a new type of environmentally friendly building material with superior performance in heat insulation, sound absorption, moisture resistance, fire prevention, light weight and high strength. Foam glass-ceramic consists of three parts: glass phase, crystal and pores. In the glass phase matrix with a large number of pores evenly distributed, a large number of tiny crystals are evenly distributed, so that the glass and the crystal network are linked together to form a glass crystal interweaving structure, which greatly improves the mechanical strength of the material and can be used to make walls. Material. [0004] All kinds of tailings have become one of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C11/00C03C10/00C03C6/10C03C1/00
CPCC03C1/00C03C1/002C03C10/0063C03C11/007
Inventor 万永宁李明飞
Owner 东莞市银泰玻璃有限公司