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Method for preparing soil remediating and modifying agent through oyster shell powder-medical stone powder

A technology of medical stone powder and soil remediation, applied in soil conditioning materials, chemical instruments and methods, applications, etc., can solve problems such as harm and low utilization efficiency, and achieve the goal of improving disease resistance, increasing soil biomass, and eliminating pollution. Effect

Inactive Publication Date: 2018-10-02
WUHU CHUANGYUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the low utilization efficiency of chemical fertilizers and the series of hazards they bring to the environment and agricultural products, research on slow / controlled release fertilizers is becoming one of the hot issues in the research of plant nutrition and fertilizers.

Method used

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Embodiment

[0021] A kind of method that prepares soil remediation improving agent with oyster shell powder-medicine stone powder, is characterized in that, carries out according to the following steps:

[0022] (1) Preparation of oyster shell superfine powder by jet milling method:

[0023] Rinse 20kg of oyster shells with water, dry them naturally, soak them in sodium hydroxide solution for 6 days, dry them naturally, grind them roughly with a universal pulverizer, then with a stainless steel pulverizer, pass through a 100-mesh sieve, and grind them at 95- Dry in an electric constant temperature drying oven at 105°C for 8 hours, and use a supersonic jet mill to pulverize the powder twice to obtain superfine powder of oyster shells;

[0024] (2) Modification of oyster shell superfine powder:

[0025] Dissolve 5kg of ferrous sulfate heptahydrate in the ethanol / water mixture to make a 0.8mol / L solution, add the oyster shell superfine powder obtained in (1) to it, stir evenly, and pass in ...

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Abstract

The invention discloses a method for preparing a soil remediating and modifying agent through oyster shell powder-medical stone powder. The method is characterized by comprising the following steps: flushing oyster shell with water; drying by air; soaking in a sodium hydroxide solution; drying by air; roughly milling through a universal crusher and a stainless steel crusher; sieving; drying; pneumatically crushing powder through a supersonic speed airflow crusher to obtain ultrafine powder of oyster shell; dissolving ferrous sulfate into ethyl alcohol / water mixing liquid to obtain a solvent;adding the ultrafine powder of oyster shell, and uniformly stirring; charging nitrogen; slowly adding a reducing solution which is potassium borohydride with stirring, and fully reacting; removing supernatant liquid; washing with deionized water; washing with absolute ethyl alcohol; drying to obtain nano-iron modified ultrafine powder of oyster shell; crushing biomass clinker by ball milling; sieving; adding concentrated sulfuric acid for leaching; heating; activating; leaching with water; cooling and filtering to obtain activated biomass clinker; uniformly mixing the activated biomass, medical stone powder and modified ultrafine powder of oyster shell; and pelletizing to obtain the soil remediating and modifying agent.

Description

technical field [0001] The invention relates to the field of soil improvement fertilizers, in particular to a method for preparing a soil repair improver by using oyster shell powder-medicine stone powder. Background technique [0002] Biomass charcoal is a solid product obtained by pyrolyzing biomass materials such as crop straws and wood chips under the environmental conditions of limiting or isolating oxygen. Due to the high ash content, the biochar prepared from crop stalks and other wastes is limited in the industrial field, but it can be widely used in the agricultural field. [0003] In view of the low utilization efficiency of chemical fertilizers and the series of hazards they bring to the environment and agricultural products, research on slow / controlled release fertilizers is becoming one of the hot issues in the research of plant nutrition and fertilizers. On the one hand, the slow / controlled release fertilizer can be processed by coating the fertilizer with a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/04C09K17/08C09K101/00C09K109/00
CPCC09K17/04C09K17/08C09K2101/00C09K2109/00
Inventor 高恒东胡佳佳
Owner WUHU CHUANGYUAN NEW MATERIALS CO LTD
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