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Method for preparing soil conditioner from industrial solid waste

A technology of soil conditioner and industrial solid waste, which is applied in the field of preparing soil conditioner by using industrial solid waste, which can solve the problems of complicated process, chemical reaction and high production cost

Inactive Publication Date: 2020-10-23
贵州省福泉市恒瑞环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the process is complicated, and the phosphogypsum needs to be calcined at 300-500°C, aged and treated with lime water to remove soluble harmful impurities in the phosphogypsum, and the production cost is high.
[0008] Based on the above technical situation, phosphorus tailings and phosphogypsum are solid waste residues left by industrial production, and it is difficult to completely recycle them under the current technical conditions. At the same time, the existing soil improvers and fertilizers are basically raw ore For production and processing, chemical reactions are required, and the production cost is high

Method used

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  • Method for preparing soil conditioner from industrial solid waste
  • Method for preparing soil conditioner from industrial solid waste
  • Method for preparing soil conditioner from industrial solid waste

Examples

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Embodiment 1

[0029] Example 1. Raw materials: 100,000 tons of raw material phosphogypsum, 2,200 tons of quicklime, 88,900 tons of white phosphorus fertilizer (that is, fertilizer-grade calcium hydrogen phosphate), 22,000 tons of phosphorus tailings, and 8,900 tons of organic matter.

[0030] Utilize above-mentioned raw material to prepare the method for soil conditioner, technique is as follows Figure 1-3 shown, follow the steps below:

[0031] (1) Crushing and neutralization: The raw material phosphogypsum is crushed and neutralized in the crusher after adding quicklime, solidified fluoride, and modified to a pH value of 7-8 to obtain modified phosphogypsum. This process will generate certain dust and noise. The noise is reduced by low-noise equipment and sound insulation measures for the workshop, and the crushed dust is treated by installing a bag filter on the crusher and then discharged through a 15m high exhaust pipe;

[0032] (2) Mixing and stirring: measure and weigh the modifie...

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Abstract

The invention discloses a method for preparing a soil conditioner from industrial solid waste. The method comprises the following steps: (1) crushing and neutralizing: adding 2-3% of quick lime into araw material phosphogypsum, and crushing and neutralizing to obtain modified phosphogypsum; (2) mixing and stirring: uniformly stirring the modified phosphogypsum, a white phosphorus fertilizer, phosphate tailings and organic matters according to a weight ratio of (40-50): (35-45): (5-15): (1-5) to obtain a granular soil conditioner; and (3) grinding: grinding the granular soil conditioner into powder to obtain the soil conditioner. The method is simple in preparation process and low in energy consumption; and the industrial solid waste is used as a raw material for preparing the soil conditioner, so the method has important significance in saving the cost, protecting the environment and creating a new circular economy mode for industrial farmers.

Description

technical field [0001] The invention relates to the technical field of soil improvement and solid waste reuse, in particular to a method for preparing a soil conditioner by using industrial solid waste. Background technique [0002] Soil amendments can effectively improve soil physical and chemical properties and soil nutrient status, and have a positive impact on soil microorganisms, thereby increasing the productivity of degraded soils. Therefore, its research and application have important theoretical and practical significance for the prevention and control of soil degradation. [0003] Phosphogypsum refers to the solid waste generated when sulfuric acid is used to treat phosphate rock in the production of phosphoric acid, and its main component is calcium sulfate. In recent years, with the gradual development of my country's phosphate fertilizer industry, the output and discharge of phosphogypsum has also shown a trend of increasing year by year. The industrial by-pro...

Claims

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Application Information

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IPC IPC(8): C05G3/80C09K17/40C09K101/00
CPCC05B3/00C09K17/40C09K2101/00C05G3/80C05B9/00C05B15/00C05B17/00C05D3/00C05D3/02C05D5/00
Inventor 郑科
Owner 贵州省福泉市恒瑞环保科技有限公司
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