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Phosphogypsum comprehensive resource utilization formula and process

A technology that integrates resources and phosphogypsum, applied in applications, household appliances, manufacturing tools, etc., can solve the problems of long setting time of phosphogypsum slurry, inferior cementation performance than natural gypsum, poor viscosity and fluidity, etc., to save resources. , Good frost resistance, avoid secondary pollution effect

Inactive Publication Date: 2020-11-17
中环投(山东)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The gelling performance of phosphogypsum is lower than that of natural gypsum, the cementation performance is not as good as that of natural gypsum, and its viscosity and fluidity are also worse than natural gypsum. Phosphogypsum slurry has a long setting time and has a certain degree of corrosion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A formula for comprehensive resource utilization of phosphogypsum, which is characterized in that it includes phosphogypsum, solid waste materials, aggregates, gelling materials, coagulant and clear water.

[0032] The aggregate is other solid waste materials or natural sand and gravel, the cement is cement, the coagulant is a special coagulant PLD-NGJ-10, and the clear water is river water.

[0033] The proportion of the phosphogypsum is 70%

[0034] The proportion of solid waste materials or natural sand and gravel materials is 15%

[0035] The proportion of cement is 7%

[0036] The special coagulant PLD-NGJ-10 type accounts for 0.2%

[0037] The river water accounts for 7.8%

[0038] Wherein, the river water is filtered and purified to be non-alkaline, and the sintered bricks formed by the phosphogypsum are porous bricks.

[0039] Wherein, the phosphogypsum is a solid waste produced in the wet process phosphoric acid process, and its main component is calcium su...

Embodiment 2

[0051] A formula for comprehensive resource utilization of phosphogypsum, which is characterized in that it includes phosphogypsum, solid waste materials, aggregates, gelling materials, coagulant and clear water.

[0052] The aggregate is other solid waste materials or natural sand and gravel, the cement is cement, the coagulant is a special coagulant PLD-NGJ-10, and the clear water is river water.

[0053] The proportion of the phosphogypsum is 60%

[0054] The proportion of solid waste materials or natural sand and gravel materials is 25%

[0055] The proportion of cement is 7%

[0056] The special coagulant PLD-NGJ-10 type accounts for 0.2%

[0057] The river water accounts for 7.8%

[0058] Wherein, the river water is filtered and purified to be non-alkaline, and the sintered bricks formed by the phosphogypsum are porous bricks.

[0059] Wherein, the phosphogypsum is a solid waste produced in the wet process phosphoric acid process, and its main component is calcium su...

Embodiment 3

[0071] A formula for comprehensive resource utilization of phosphogypsum, which is characterized in that it includes phosphogypsum, solid waste materials, aggregates, gelling materials, coagulant and clear water.

[0072] The aggregate is other solid waste materials or natural sand and gravel, the cement is cement, the coagulant is a special coagulant PLD-NGJ-10, and the clear water is river water.

[0073] The proportion of the phosphogypsum is 50%

[0074] The proportion of solid waste materials or natural sand and gravel materials is 35%

[0075] The proportion of cement is 7%

[0076] The special coagulant PLD-NGJ-10 type accounts for 0.2%

[0077] The river water accounts for 7.8%

[0078] Wherein, the river water is filtered and purified to be non-alkaline, and the sintered bricks formed by the phosphogypsum are porous bricks.

[0079] Wherein, the phosphogypsum is a solid waste produced in the wet process phosphoric acid process, and its main component is calcium su...

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Abstract

The invention relates to a phosphogypsum comprehensive resource utilization formula and process. The formula comprises phosphogypsum, a solid waste material, aggregate, a cementing material, a coagulator and clear water, wherein the aggregate adopts other solid waste materials or natural sandstone materials, the cementing material adopts cement, the coagulator adopts a special coagulator PLD-NGJ-10 type, the clear water adopts river channel water, the phosphogypsum accounts for 50-70%, the solid waste material or the natural sandstone material accounts for 15-35%, the cement accounts for 7%, the special coagulator PLD-NGJ-10 accounts for 0.2%, and the river water accounts for 7.8%. According to the invention, phosphogypsum is used for replacing clay to produce a sintered brick, so that secondary pollution to the environment can be avoided, and resources are saved, and compared with a common baking-free brick, the brick at the roasted part of the ardealite has the characteristics of high strength, good freezing resistance and no secondary pollution.

Description

technical field [0001] The invention relates to the technical field related to brick making, in particular to a formula and process for comprehensive resource utilization of phosphogypsum. Background technique [0002] Phosphogypsum is mainly gray-black and gray-white, the particle diameter is generally 5-50 μm, and the crystal water content is 20%-25%. Phosphogypsum is a solid waste produced in the wet process phosphoric acid process, and its main component is calcium sulfate dihydrate. The composition of phosphogypsum is relatively complex. In addition to calcium sulfate, there are incompletely decomposed phosphate rock, residual phosphoric acid, fluoride, acid insoluble matter, organic matter, etc., among which the existence of fluorine and organic matter has the greatest impact on the resource utilization of phosphogypsum . The random discharge and accumulation of phosphogypsum seriously damages the ecological environment, not only pollutes groundwater resources, but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/00C04B33/132C04B33/135C04B33/13B28B3/02B28B1/093
CPCB28B1/093B28B3/022C04B33/131C04B33/132C04B33/1352C04B38/00Y02P40/60
Inventor 简明于晓黎许丕显
Owner 中环投(山东)环境科技有限公司