Method for preparing potassium mineral-enriched soil repairing material, potassium mineral-enriched soil repairing material prepared by using method and application

A soil remediation and mineral technology, applied in the direction of soil conditioning materials, restoration of contaminated soil, fertilization methods, etc., can solve the problems of long repair period, ineffective effect, secondary pollution, etc., achieve passivation activity, and simple preparation method Effective, easy-to-handle effects

Pending Publication Date: 2018-08-10
通化海汇龙洲化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the soil remediation materials that have been promoted and used at present have problems such as long repair period, ineffecti

Method used

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  • Method for preparing potassium mineral-enriched soil repairing material, potassium mineral-enriched soil repairing material prepared by using method and application
  • Method for preparing potassium mineral-enriched soil repairing material, potassium mineral-enriched soil repairing material prepared by using method and application
  • Method for preparing potassium mineral-enriched soil repairing material, potassium mineral-enriched soil repairing material prepared by using method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: The potassium-rich mineral-based repair material was prepared by using leucite as raw material after heat treatment and hydrothermal activation treatment, and the repair experiment of contaminated soil was carried out.

[0026] Mix 1000g of leucite with 800g of quicklime, 200g of magnesium sulfate, and 30g of sodium chloride, grind it to a size below 200 mesh, heat treat at 1100°C for 1.5h, and obtain 1850g of heat-treated material. Add 1500g of water to the heat-treated material and add sulfuric acid to adjust the pH value to 8-9, heat to 240°C for hydrothermal activation treatment, filter and dry to obtain 1935g of potassium-rich mineral-based soil restoration material. See Table 1 for the ingredient content of raw materials, and Table 2 for the ingredient content of the product.

[0027] Table 1 Composition content list of raw and auxiliary materials

[0028]

[0029] *Loss on ignition refers to loss on ignition.

[0030] Table 2 ICP test data table o...

Embodiment 2

[0039] Example 2: Using feldspar as a raw material, after heat treatment and hydrothermal activation treatment, potassium-rich mineral-based restoration materials were prepared by firing, and a field restoration experiment of contaminated soil was carried out.

[0040] Mix 150kg of feldspar ore with 240kg of limestone, 80kg of magnesium carbonate, and 12kg of sodium sulfate and grind them to a size below 200 mesh. Heat-treat at 1300°C for 2 hours to obtain 280kg of heat-treated material. Add water according to the ratio of 1:1 between water and heat-treated material, add phosphoric acid to adjust the pH value to 7-8, heat to 200°C for hydrothermal activation treatment, and dry to obtain 265kg of potassium-rich mineral-based soil restoration material. See Table 5 for the ingredient content of raw materials, and Table 6 for the ingredient content of the product.

[0041] Table 5 Composition content table of raw and auxiliary materials

[0042]

[0043] *Loss on ignition refe...

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Abstract

The invention relates to a method for preparing a potassium mineral-enriched soil repairing material, a potassium mineral-enriched soil repairing material prepared by using the method and application.The method comprises the following steps: mixing a potassium-enriched aluminosilicate mineral with a composite salt, finely grinding, and screening; performing thermal treatment on a finely grinded material; adding an activating agent to adjust the pH value of the material after thermal treatment, performing hydro-thermal activation treatment, and drying, so as to obtain the potassium mineral-enriched soil repairing material. The potassium mineral-enriched soil repairing material can be used as a base fertilizer to replenish nutrient elements such as potassium and silicon, the soil fertilitycan be improved, and heavy metal pollution of the soil can be also treated and repaired by using the material. The method is simple, effective and easy to operate, the raw materials are wide in distribution and simple and easy to obtain, and the product is convenient to transport and store, and good economic and environment benefits can be made.

Description

technical field [0001] The invention relates to heavy metal polluted soil remediation technology and mineral material deep processing technology, in particular to a preparation method of potassium-rich mineral-based soil remediation material, the potassium-rich mineral-based soil remediation material prepared by the method and its use. Background technique [0002] Potash is one of the two most scarce non-metallic minerals in my country, and 95% of the world's potash products are used as fertilizers. China's soluble potash reserves are low, accounting for only about 2.2% of the world's total reserves. Although my country has increased the development and utilization of potassium in recent years, such as the potassium chloride potassium chloride produced by Qinghai Salt Lake Potash Co., Ltd., the potassium magnesium sulfate fertilizer produced by Qinghai CITIC Guoan Technology Development Co., Ltd., and the development and production of Xinjiang Lop Nur Potash Co., Ltd. Potas...

Claims

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Application Information

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IPC IPC(8): C05G3/04C09K17/08A01C21/00B09C1/08C09K109/00C05G3/80
CPCA01C21/00B09C1/08C05B17/00C05D1/04C05G3/80C09K17/08C09K2109/00C05D3/02C05D5/00C05D9/00
Inventor 向玲赖学明刘耀驰钟楚彬王杨曹正海
Owner 通化海汇龙洲化工有限公司
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