Natural medical stone contained agricultural soil heavy metal passivator and preparation method thereof

A heavy metal passivator, medical stone technology, applied in chemical instruments and methods, agriculture, soil conditioning materials, etc., can solve the problem of reducing bioavailability and mobility, affecting soil chemical properties and fertility, and affecting soil availability. To achieve the effect of improving the ability of water and fertilizer retention, beneficial to growth and low cost
CN109097052AInactive Publication Date: 2018-12-28哈密国家农业科技园区管委会
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
哈密国家农业科技园区管委会
Publication Date
2018-12-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a natural medical stone contained agricultural soil heavy metal passivator and a preparation method thereof. The metal passivator comprises the following raw materials in partsby weight: 20-40 parts of clay minerals, 25-35 parts of quicklime, 20-30 parts of medical stone, 10-30 parts of natural phosphate fertilizer, 5-10 parts of oyster shells and 2-6 parts of red mud. Thepreparation method comprises the following steps: S1, preparing the raw materials; S2, calcining the raw materials; S3, crushing the raw materials; S4, mixing the raw materials. The metal passivatorcan passivate and repair various heavy metals, especially lead and cadmium, greatly increases the yield of crops, improves quality of soil, and is more beneficial to the growth of crops; the preparation method is simple in preparation process, easy to operate and low in cost. Therefore, the passivator is suitable for batch production.
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Description

technical field

[0001] The invention relates to the technical field of metal deactivators, in particular to a natural medical stone agricultural soil heavy metal deactivator and a preparation method thereof. Background technique

[0002] With the rapid advancement of China's industrialization and urbanization process, soil heavy metal pollution has become increasingly prominent, and the "three wastes" of chemical, mining, and smelting industries, urban traffic, atmospheric deposition, livestock and poultry manure, urban sludge, pesticides and fertilizers have become major sources of pollution. Due to the pollution of farmland soil by heavy metals, the problem of heavy metal pollution of agricultural products produced on polluted farmland has become increasingly prominent. The content of heavy metals in China's soil exceeds the background value of the soil, especially the pollution of Cd and Pb is serious.

[0003] The traditional research method is to add chemical substance...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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