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Method for preparing inorganic coarse aggregate by gypsum calcination-free technology

A calcining-free technology, applied in the construction industry, can solve the problems of difficult control of initial setting, secondary energy consumption, secondary pollution, etc., and achieve the effect of long operation time of construction, reduction of investment cost, and no secondary pollution

Inactive Publication Date: 2011-09-07
ANHUI JINMA ENVIRONMENTAL PROTECTION ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, the traditional production method of using industrial by-product gypsum to produce building materials is: desulfurized gypsum, after drying - calcining - grinding - aging - building gypsum; then adding retarder and chemical additives to make building materials , the biggest disadvantage of the product is: low strength, water resistance, difficult control of initial setting, and high cost; at the same time, it causes secondary energy consumption and secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention is further described below in conjunction with embodiment.

[0017] case:

[0018] Take 900 kilograms of industrial by-product gypsum, 100 kilograms of steel slag, 10 kilograms of alum, and 5 kilograms of metakaolin, mix them evenly, ball mill them into a fineness of more than 200 mesh and pack them.

[0019] The inorganic main material prepared by this method is added with a small amount of cement and admixture to prepare high-strength, water-resistant ordinary dry powder mortar, special dry powder mortar, porous brick, aerated block brick, hollow brick and other new building materials.

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Abstract

The invention discloses a method for preparing inorganic coarse aggregate by a gypsum calcination-free technology. The inorganic coarse aggregate is prepared by uniformly mixing industrial side product gypsum, steel slag, mineral vanadium and metakaolin, carrying out ball milling to obtain granules with fineness of over 200 meshes, and packaging. The product prepared by the method has high strength, water resistance, and gelling property. The method has the advantages of being capable of consuming massive desulfurization gypsum, reducing secondary energy loss and secondary CO2 pollution and achieving low-carbon technology and low-carbon economy.

Description

technical field [0001] The invention relates to a method for preparing inorganic main aggregate produced by gypsum-free calcination technology, which is mainly used in the field of construction industry. Background technique [0002] At present, most of the filling materials on the market are aggregates of main building materials such as lime calcium, old powder, talcum powder, fly ash, steel slag, slag, and water slag. These aggregates are fillers with low strength and water resistance. They require the addition of cementitious cement and waterproofing admixtures to produce a high-strength and water-resistant finished product. At this stage, the traditional production method of using industrial by-product gypsum to produce building materials is: desulfurized gypsum, after drying - calcining - grinding - aging - building gypsum; then adding retarder and chemical additives to make building materials , The biggest disadvantage of the product is: low strength, water resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
Inventor 魏雄石志刚张同刚
Owner ANHUI JINMA ENVIRONMENTAL PROTECTION ENERGY SAVING TECH