Novel wall brick manufactured by utilizing fluorgypsum and tailing waste residues and preparation method for novel wall brick

A technology for tailings waste residue and fluorine gypsum, applied in the field of building materials, can solve the problems of unfavorable industrial promotion, high total amount and high cost, and achieve the effects of low cost, large amount of slag eaten and high compressive strength

Inactive Publication Date: 2012-06-20
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the total amount of the water-soluble gypsum recrystallization accelerator and emulsified adhesive used in this method is as high as 2%. On the one hand, the cost will be very high, which is not conducive to industrial promotion. At the same time, the water-soluble gypsum recrystallization accelerator is usually a salt substance , a high content of 1% will cause severe frosting of bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A new type of wall brick (or fluorogypsum non-steamed brick) made of fluorogypsum and tailings waste residue, which is prepared from solid materials, active activators and water, the active activator is 0.3% of the total mass of solid materials, water It is 10% of the total mass of the solid material and the active activator; the active activator is a sulfate activator (metal sulphate activator).

[0024] The solid material is composed of fluorogypsum, tailings waste residue, other aggregates and alkaline materials, and the mass percentages of each raw material in the solid material are: 40% of fluorogypsum, 20% of vanadium-titanium tailings, and 17.5% of fluorite tailings ( Vanadium-titanium tailings and fluorite tailings constitute tailings waste), blast furnace heavy slag (other aggregate) 17.5%, and calcium carbide slag (alkaline material) 5%.

[0025] The used fluorine gypsum requires the limit of radionuclides to meet the requirements of the GB6566-2001 standard, ...

Embodiment 2

[0035] A new type of wall brick made of fluorogypsum and tailings waste residue, which is prepared from solid materials, active activators and water, the active activator is 0.4% of the total mass of solid materials, and water is the total mass of solid materials and active activators 10% of;

[0036] The solid material is composed of fluorogypsum, tailings waste residue, other aggregates and alkaline materials, and the mass percentage of each raw material in the solid material is: 40% of fluorogypsum, 20% of vanadium-titanium tailings, and 24.5% of fluorite tailings ( Vanadium-titanium tailings and fluorite tailings constitute tailings waste), blast furnace heavy slag (other aggregate) 10.5%, quicklime (alkaline material) 5%.

[0037] The used fluorine gypsum requires the limit of radionuclides to meet the requirements of the GB6566-2001 standard, and the fineness is 0.2 sieve and less than 10% (mass).

[0038] The tailing waste slag is vanadium-titanium tailings (namely van...

Embodiment 3

[0048] A new type of wall brick made of fluorogypsum and tailings waste residue, which is prepared from solid materials, active activators and water, the active activator is 0.2% of the total mass of solid materials, and water is the total mass of solid materials and active activators 12% of;

[0049] The solid material is composed of fluorogypsum, tailings waste residue, other aggregates and alkaline materials, and the mass percentage of each raw material in the solid material is: 20% of fluorine gypsum, 40% of tailings waste residue, 30% of other aggregates, alkali Sexual material 10%.

[0050] The used fluorine gypsum requires the limit of radionuclides to meet the requirements of the GB6566-2001 standard, and the fineness is 0.2 sieve and less than 10% (mass).

[0051] The tailings waste slag is iron tailings, the particles of which are less than 3mm, and the water content is less than 10wt%.

[0052] The other aggregates mentioned above are zeolite; after the other aggr...

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Abstract

The invention belongs to the technical field of building materials, and in particular relates to a wall brick and a preparation method thereof. The novel wall brick is manufactured by utilizing fluorgypsum and tailing waste residues, and is characterized by being prepared from a solid material, an active excitant and water, wherein the active excitant is 0.2 to 0.4 percent of the total mass of the solid material, and the water is 10 to 15 percent of the total mass of the solid material and the active excitant; and the solid material consists of the following raw materials in percentage by mass: 20 to 60 percent of fluorgypsum, 20 to 44.5 percent of tailing waste residues, 10 to 30 percent of other aggregates and 5 to 10 percent of basic material. The invention has the characteristic that:the wall brick is low in production cost.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a wall brick and a preparation method thereof. Background technique [0002] Fluorogypsum is a waste residue mainly composed of anhydrous calcium sulfate produced by the reaction of sulfuric acid and fluorite in the process of hydrofluoric acid production, mainly produced by hydrofluoric acid production enterprises. About 4t of fluorine gypsum is emitted for every 1t of HF produced. At present, the production capacity of anhydrous hydrofluoric acid in my country is nearly 1.4 million tons, the output exceeds 1 million tons, and the discharge of fluorogypsum exceeds 4 million tons, which is quite considerable. When fluorine gypsum is discharged from the furnace, it often contains residual sulfuric acid and hydrofluoric acid and is strongly acidic, with a pH of 0.5 to 1.0. According to regulations, wastes with leachate pH ≤ 2 or pH ≥ 12.5 are corrosive waste...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C04B28/14
Inventor杨新亚刘栋黄澄华李训生
OwnerWUHAN UNIV OF TECH