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Method for producing building material with low-temperature ceramic modified industry by-product gypsum

A technology of industrial by-product gypsum and low-temperature ceramics, which is applied in cement production, climate sustainability, and sustainable waste treatment. It can solve the problems of low strength, poor stability, and water resistance of gypsum products, and achieve high waste utilization efficiency. The effect of good product performance and mild curing conditions

Inactive Publication Date: 2008-12-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a low-temperature ceramic modified industrial by-product gypsum production method for building materials, which not only avoids the complicated process of washing, drying and calcining industrial by-product gypsum in the known technology, but also solves the problem of the strength of gypsum products produced by the known technology Problems of low, water-resistant and poor stability

Method used

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  • Method for producing building material with low-temperature ceramic modified industry by-product gypsum

Examples

Experimental program
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Effect test

Embodiment 1

[0027] 1) Formula composition (substance measurement units are parts by mass):

[0028] The raw materials of the cementitious material are 50 parts of yellow phosphorus slag, 20 parts of fly ash, and 30 parts of blast furnace slag; 25 parts; the activator is 10 parts of cement, 10 parts of lime, 60 parts of carbide slag; 2 parts of auxiliary solid water glass, 3 parts of aluminum sulfate, 2 parts of ferric chloride, 4 parts of aluminum potassium sulfate, and 1 part of ferrous sulfate; The water reducing agent is 0.3 parts of calcium lignosulfonate, 0.3 parts of sodium lignosulfonate, 0.3 part of naphthalene sulfonate, 0.1 part of sodium humate; 150 parts of phosphogypsum washing wastewater.

[0029] 2) Process: The cementitious material raw materials measured according to the formula, activator, auxiliary agent, and water reducing agent are blended and ground into a powder with a particle size of less than 0.08mm, accounting for 91%; phosphogypsum and desulfurized gypsum are f...

Embodiment 2

[0032] 1) Formula (substance measurement units are parts by mass)

[0033]The cementitious material is 20 parts of blast furnace slag, 20 parts of fly ash, 40 parts of calcined red mud, 20 parts of calcined alumina tailings; 150 parts of phosphogypsum in industrial by-product gypsum, 250 parts of desulfurization gypsum, 150 parts of titanium gypsum, 100 parts of citric acid gypsum, 100 parts of fluorine gypsum, 50 parts of wet-process manganese slag, 100 parts of lead-zinc slag; filler materials are 250 parts of tertiary fly ash, 250 parts of construction waste concrete; activator is 30 parts of lime, calcium carbide slag 85 parts; additives are 1 part of aluminum sulfate, 10 parts of ferric chloride, 10 parts of ferrous sulfate; water reducer is 5 parts of calcium lignosulfonate, 5 parts of sodium lignosulfonate; 500 parts of papermaking wastewater.

[0034] 2) Process: According to the formula, the cementitious material raw materials, activators, additives, and water reducer...

Embodiment 3

[0037] 1) Formula composition (substance measurement units are parts by mass):

[0038] The cementitious material is 30 parts of thermal manganese slag, 30 parts of phosphogypsum acid slag, 20 parts of calcined coal gangue, and 20 parts of steel slag; 50 parts of incineration slag, 100 parts of copper slag, 50 parts of waste concrete, 50 parts of waste brick, 200 parts of bagasse; the activator is 30 parts of cement, 90 parts of lime, 30 parts of carbide slag; 2 parts of auxiliary solid water glass, aluminum sulfate 8 parts, 10 parts of ferric chloride, 4 parts of aluminum potassium sulfate, 6 parts of ferrous sulfate; water reducing agent is 2.0 parts of calcium lignosulfonate, 2.0 parts of sodium lignosulfonate, 1.0 part of naphthalenesulfonate, humic acid 0.1 parts of sodium; 5.0 parts of polyvinyl acetate emulsion, 10.0 parts of silicon-acrylic emulsion, 0.5 parts of paraffin wax emulsion, 2.0 parts of polyvinyl alcohol, 2.5 parts of styrene-acrylic emulsion, 30 parts of a...

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Abstract

The invention relates to a method for making a building material by low-temperature ceramic modified industrial side product gypsum, belonging to the building material technical field. The compositions adopted by the method are mixed according to the following mass ratio that: gelating material: side product gypsum: filler: activator: auxiliary agent: water reducing agent: polymer emulsion: solvent is equal to 100:300-900:50-500:80-150:12-30:1.0-10:0-50:50-500. The raw materials respectively undergoes raw material treatments such as gelating material powder preparation, waste gypsum treatment, filler crushing screening and polymer emulsion-solvent mixing and so on, and then are made into a building material which takes low-temperature ceramic mineral generated by the hydration of an inorganic waste residue gelating material as matrix phase and waste residue particle, waste gypsum and a hydration product thereof as disperse phase through the mixing, forming and maintenance working operation of a semi-finished product raw material. The building material has excellent mechanical property, high comprehensive utilization rate of wastes, more derivative products and stable performance.

Description

1. Technical field: [0001] The invention relates to a method for producing building materials by modifying industrial by-product gypsum with low-temperature ceramics, and belongs to the technical field of building material preparation. 2. Background technology: [0002] The so-called industrial by-product gypsum is a by-product mainly composed of calcium sulfate dihydrate discharged from the production process of chemical industry, metallurgy, energy, food and other industries, such as flue gas desulfurization gypsum, phosphogypsum, titanium gypsum, fluorogypsum by-product of coal-fired power plants , citric acid gypsum, wet manganese slag and lead-zinc slag, etc. On the one hand, the industrial by-product gypsum has a large output and occupies land. What’s more, it also contains substances harmful to human body and environment, such as free acid and heavy metal ions. Its safe treatment and resource utilization have become a major issue that needs to be solved urgently by re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/28
CPCC04B28/087Y02W30/91Y02P40/10C04B7/1535C04B18/0409C04B18/0418C04B18/08C04B18/081C04B18/106C04B18/125C04B22/12C04B22/142C04B22/145C04B22/148C04B22/149C04B22/16C04B24/2623C04B24/36C04B40/0071C04B40/0089C04B40/024C04B2103/10C04B2103/302C04B7/00C04B18/141C04B22/064C04B24/04C04B24/18C04B24/226
Inventor 张召述夏举佩
Owner KUNMING UNIV OF SCI & TECH
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