Preparation of soil substrate based on pyrite slag and application thereof
By leaching pyrite slag with hair and sulfuric acid, and fermenting it with Kudriazwibich yeast, a soil substrate suitable for crop cultivation was prepared, solving the problem of heavy metal pollution from pyrite slag and achieving a win-win situation for resource utilization and environmental protection.
CN119605601BActive Publication Date: 2026-06-09CHONGQING ZHIQING ECOLOGICAL ENVIRONMENTAL PROTECTION TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING ZHIQING ECOLOGICAL ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2025-01-24
- Publication Date
- 2026-06-09
AI Technical Summary
Technical Problem
Existing technologies cannot effectively utilize the high nutrient elements in pyrite slag while removing heavy metals, leading to environmental pollution and land occupation, and failing to meet the soil requirements for crop cultivation.
Method used
Iron was extracted by acid leaching of pyrite slag, hair, and sulfuric acid. The hair was hydrolyzed to form hydrolyzed protein that complexed with heavy metals. Combined with fermentation by Kudriazwibich yeast and clay treatment, a soil substrate suitable for crop cultivation was prepared.
Benefits of technology
It significantly reduces heavy metal content, raises soil pH to neutral, reduces soil pollution, provides a suitable soil matrix for crop growth, and reduces land occupation and environmental pollution.
✦ Generated by Eureka AI based on patent content.
Abstract
The application discloses a soil matrix prepared based on pyrite slag, and a preparation method of the soil matrix, which comprises the following steps: mixing pyrite slag, hair and sulfuric acid together for pretreatment, wherein the weight ratio of the pyrite slag, the hair and the sulfuric acid is 5-10:0.5-2:5-10. In the process of extracting iron elements from the pyrite slag by acid leaching, the hair is added for hydrolysis to obtain hydrolyzed protein, which can well remove heavy metals in the pyrite slag by complexing with heavy metals in the pyrite slag, so that the content of the heavy metals in the pyrite slag is significantly reduced, the soil matrix prepared from the pyrite slag is suitable for plant growth, and the heavy metal pollution of the soil is reduced.
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