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Ardealite ecological brick, preparation method and slope fixing method

A technology of phosphogypsum and ecological bricks, applied in the field of phosphogypsum, can solve the problems of high production cost, inability to produce building gypsum powder and its products, and limit the market prospect of phosphogypsum building material utilization, and achieve high comprehensive utilization rate , to achieve sustainable development, good ecological and economic benefits

Inactive Publication Date: 2020-08-18
朱健
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to current technology, phosphogypsum with calcium sulfate dihydrate content ≤ 75% basically cannot be used to produce construction gypsum powder and its products. The use of phosphogypsum to produce qualified quality construction gypsum powder requires drying and calcination processes. Only from the calcination process and The input and production cost of equipment is relatively high, which limits the market prospect of the utilization of phosphogypsum building materials

Method used

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  • Ardealite ecological brick, preparation method and slope fixing method
  • Ardealite ecological brick, preparation method and slope fixing method
  • Ardealite ecological brick, preparation method and slope fixing method

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preparation example Construction

[0030] Such as figure 1 Shown, the preparation method of the phosphogypsum ecological brick that the embodiment of the present invention provides comprises:

[0031] S101: selecting phosphogypsum as a raw material; dividing the selected phosphogypsum into three parts.

[0032] S102: Wash and dry the phosphogypsum raw material with a mass percentage of 30.0% first, then calcinate it at a low temperature of 160°C to 200°C for harmless treatment, and add 5.0% to 10.0% by mass of commercialized phosphogypsum to the calcined phosphogypsum Permeable concrete binder and 1.0% by mass percentage of phenolic resin and other substances are extruded into a square phosphogypsum frame by a mold;

[0033] S103: Mix 50.0% by mass phosphogypsum raw material with biochar powder (20.0% by mass), and add 1.0% by mass of mineral fertilizer (a mixture of low-grade phosphate rock powder and potassium-rich shale powder) and A small amount of cement (phenolic resin and chitosan) is extruded into a p...

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Abstract

The invention belongs to the technical field of ardealite, and discloses an ardealite ecological brick, a preparation method and a slope fixing method. The method comprises the following steps: selecting ardealite as raw material, performing harmless treatment on part of ardealite; adding a cementing agent and the like, and extruding into a square ardealite frame with a certain size; meanwhile, mixing part of ardealite and biomass charcoal, adding a small amount of mineral fertilizer and cementing agent, and extruding the mixture into a porous square ardealite board; besides, using lime for adjusting the acidity of the matrix of the remaining ardealite, adding a small amount of biomass materials, and building soil matrixes for growth of different types of plants; and putting the obtained soil matrix into the circular hollow part of the gypsum frame and the pores of the ardealite board to obtain the slope greening ardealite ecological brick. The method provided by the invention has thecharacteristics of high comprehensive utilization rate of ardealite, low cost, good water and fertilizer retention of the plant matrix, and high vegetation coverage of slope greening.

Description

technical field [0001] The invention belongs to the technical field of phosphogypsum, and in particular relates to a phosphogypsum ecological brick, a preparation method and a slope fixing method. Background technique [0002] At present, phosphogypsum is the solid waste generated when sulfuric acid is used to treat phosphate rock powder in the production of phosphoric acid. Phosphogypsum has been disposed of in a stacked manner for a long time, which not only occupies a large amount of land, but also brings about large environmental pollution problems. The large amount of phosphogypsum that is discharged every year and accumulated over the years has become a serious environmental protection problem that restricts the sustainable development of the phosphorus chemical industry. The main component of phosphogypsum is calcium sulfate dihydrate, in addition, it also contains various other impurities such as mineral components Ca, Mg, phosphate and silicate. At present, phospho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/00C05G1/00E02D17/20E02B3/14E01C5/04E01C11/22E04F13/00A01G24/10A01G24/20A01G24/22A01G24/23
CPCA01G24/10A01G24/20A01G24/22A01G24/23C04B28/143C04B38/00C04B2111/00017C04B2111/00732C04B2111/00758C05B17/00C05D3/02E01C5/04E01C11/221E01C11/225E02B3/14E02D17/205E04F13/00C04B2103/0068C04B24/302C04B14/022C04B14/02C04B24/38C05F5/00C05F11/00C05D1/04Y02A30/60
Inventor 刘方陈祖拥刘元生卜通达
Owner 朱健
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