A high-strength phosphogypsum permeable brick and its manufacturing method

A phosphogypsum and high-strength technology, which is applied in the field of high-strength phosphogypsum permeable bricks and its manufacturing, can solve the problems of unsatisfactory water permeability, etc., achieve the effects of broadening comprehensive utilization channels, low production costs, and alleviating the pressure of comprehensive utilization

Inactive Publication Date: 2020-04-24
GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent No. CN201310533643.8, patent name "A pavement brick made of autoclaved yellow phosphorus slag and its production method", which discloses a pavement brick made of yellow phosphorus slag powder, granular yellow phosphorus slag, quicklime powder, and phosphogypsum. The problem of hardness and strength, but the water permeability is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Preparation of high-strength phosphogypsum permeable brick

[0039] (1) Get 40kg of phosphogypsum and grind it into powder to pass through a 180-220 mesh sieve to obtain phosphogypsum powder;

[0040] (2) Get 30kg of blast furnace water-quenched slag and grind it into powder and cross a 180 mesh sieve to obtain active water-quenched slag powder;

[0041] (3) Mix phosphogypsum powder and active water-quenched slag powder evenly, use wet granulation, put it into a calcination furnace, and calcine for 3 hours at a calcination temperature of 300°C, let it cool naturally, and pass through a 30-mesh sieve to obtain high-strength phosphogypsum granular powder.

[0042] (4) Mix the phosphogypsum particle powder prepared in step (3) with 30kg of epoxy resin evenly, and use a brick making machine to make a brick body.

[0043] (5) The finished product is obtained by 1.55MPa saturated steam curing.

Embodiment 2

[0044] Example 2: Preparation of high-strength phosphogypsum permeable brick

[0045] (1) Get 60kg of phosphogypsum and grind it into powder and pass through a 200-mesh sieve to obtain phosphogypsum powder;

[0046] (2) Get 20kg of blast furnace water-quenched slag and grind it into powder and cross a 200-mesh sieve to obtain active water-quenched slag powder;

[0047] (3) Mix phosphogypsum powder and active water-quenched slag powder evenly, use wet granulation, put it into a calciner, and calcinate for 3-4 hours at a calcining temperature of 350°C, let it cool naturally, and pass through a 35-mesh sieve to obtain high-strength Phosphogypsum granular powder.

[0048] (4) Mix the phosphogypsum particle powder prepared in step (3) with 20kg of epoxy resin evenly, and use a brick making machine to make a brick body.

[0049] (5) The finished product is obtained by 1.60MPa saturated steam curing.

Embodiment 3

[0050] Example 3: Preparation of high-strength phosphogypsum permeable brick

[0051] (1) Get 65kg of phosphogypsum and grind it into powder and cross a 200-mesh sieve to obtain phosphogypsum powder;

[0052] (2) Get 20kg of blast furnace water-quenched slag and grind it into powder and cross a 200-mesh sieve to obtain active water-quenched slag powder;

[0053] (3) Mix phosphogypsum powder and active water-quenched slag powder evenly, use wet granulation, put it into a calciner, and calcinate for 3-4 hours at a calcining temperature of 350°C, let it cool naturally, and pass through a 35-mesh sieve to obtain high-strength Phosphogypsum granular powder.

[0054] (4) Mix the phosphogypsum particle powder prepared in step (3) with 15kg of epoxy resin evenly, and use a brick making machine to make a brick body.

[0055] (5) The finished product is obtained through 1.6MPa saturated steam curing.

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Abstract

The invention provides a phosphogypsum water-permeable brick with high strength and a manufacturing method thereof. The water-permeable brick uses phosphogypsum, active water-quenched slag and epoxy resin as main raw materials; and the phosphogypsum water-permeable brick with high strength is prepared through processing steps of full mixing of materials, molding, curing, etc., wherein the usage amount of phosphogypsum accounts for 40% to 80% of the total amount of the materials. The water-permeable brick prepared by using the method provided by the invention has high strength and low production cost, broadens the comprehensive utilization rate of phosphogypsum, and can effectively alleviate the pressure of comprehensive utilization of solid wastes in the development process of the phosphorus chemical industry.

Description

technical field [0001] The invention belongs to the field of new building materials, and in particular relates to a high-strength phosphogypsum permeable brick and a manufacturing method thereof. Background technique [0002] According to relevant statistical data, at present, my country's annual increase in phosphogypsum emissions has reached 50 million tons, and a large amount of phosphogypsum stacking will not only occupy land resources, increase huge economic burdens on enterprises, but also cause certain pollution to the environment. my country's national economic construction and ecological environment have caused enormous pressure. Therefore, speeding up the technological innovation of comprehensive utilization of phosphogypsum and realizing turning waste into treasure and harm into benefit has become an important technical and economic policy in my country's economic construction, and it is also an urgent problem to be solved for sustainable development. According to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B20/04C04B38/00C04B18/14
CPCC04B18/141C04B20/04C04B28/143C04B38/0041C04B2111/00284C04B2201/50C04B24/281Y02W30/91
Inventor 杨步雷向前勇李泽钢项军彭步平宋维相
Owner GUIZHOU KAILIN PHOSPHOGYPSUM INTEGRATION UTILIZATION
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