Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste

A technology for polluting sediment and solidifying materials, applied in cement production, etc., can solve problems such as secondary pollution, inability to use agricultural production, and heavy metal pollution, and achieve the effects of low price, reduced activity of heavy metals, and wide sources

Pending Publication Date: 2021-01-08
中能化江苏地质矿产设计研究院有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sediment contains a large amount of heavy metal pollution, which cannot be used for agricultural production, and under certain conditions, the sediment will re-release the pollutants it adsorbs, causing secondary pollution

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste
  • Heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] This embodiment discloses a method for solidifying heavy metal-contaminated sediment with high-efficiency solidification material prepared based on coal-based solid waste and using it to solidify the sediment.

[0020] Solidification materials include: coal-based solid waste powder, calcium oxide, composite activator and water. Wherein, the composite activator is water glass and potassium hydroxide, the modulus of water glass is 1.03, and the mass of water glass and potassium hydroxide is 4:1.

[0021] The method for curing material curing cement comprises the steps of:

[0022] S1. Calcining coal gangue at 800°C for 2 hours;

[0023] S2. cooling, crushing and pulverizing the calcined coal gangue to 300 mesh to obtain coal gangue powder;

[0024] S3. Take by weighing 172.8g of water glass and 43.2g of potassium hydroxide, and mix it into a composite activator;

[0025] S4. 400g of bottom mud with a water content of 50%, 100g of coal gangue powder, 24g of calcium oxid...

Embodiment 2

[0035] This embodiment discloses a method for solidifying heavy metal-contaminated sediment with high-efficiency solidification material prepared based on coal-based solid waste and using it to solidify the sediment.

[0036] Solidification materials include: coal-based solid waste powder, calcium oxide, composite activator and water. Wherein, the composite activator is water glass and potassium hydroxide, the modulus of water glass is 1.03, and the mass of water glass and potassium hydroxide is 4:1.

[0037] The method for curing material curing cement comprises the steps of:

[0038] S1. Calcining coal gangue at 800°C for 2 hours;

[0039] S2. cooling, crushing and pulverizing the calcined coal gangue to 300 mesh to obtain coal gangue powder;

[0040] S3. Take by weighing 172.8g of water glass and 43.2g of potassium hydroxide, and mix it into a composite activator;

[0041] S4. 500g of bottom mud with a water content of 60%, 100g of coal gangue powder, 24g of calcium oxid...

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
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a heavy metal polluted bottom mud efficient curing material prepared based on coal-based solid waste. The heavy metal polluted bottom mud efficient curing material comprises coal-based solid waste powder, calcium oxide, a composite activator and water, wherein the composite activator comprises sodium silicate and potassium hydroxide, the modulus of sodium silicate is 1-1.05, and the mass ratio of sodium silicate to potassium hydroxide is 4: 1. The raw materials are solid wastes, the price is low, and the source is wide; and the coal-based solid waste is consumed, occupied land resources are reduced while the national expenditure for treating the coal-based solid waste is reduced, and good environmental protection benefits are achieved. According to the invention, the heavy metal polluted bottom mud can be effectively solidified, meanwhile, the activity of heavy metal in the bottom mud is reduced, the solidified bottom mud is harmless, and resource utilization can be achieved.

Description

technical field [0001] The invention relates to the field of resource utilization of coal-based solid waste and restoration of heavy metal pollution, specifically a coal-based solid waste such as coal gangue, fly ash, etc., which is generated by a series of measures such as screening, crushing, grinding, and modification. This product can not only solidify the heavy metal contaminated sediment, but also stabilize its heavy metal elements, so that the heavy metal contaminated sediment can be harmless and resourceful. Background technique [0002] Coal-based solid waste refers to solid waste generated during the development and utilization of coal such as coal gangue, fly ash, desulfurized gypsum, and coal chemical waste residue. At present, the utilization rate of coal-based solid waste in China is low, and most of them are piled up for disposal. On the one hand, the accumulated coal-based solid waste occupies a large amount of land resources. On the other hand, the coal-bas...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B7/24C04B12/00C04B28/00
CPCC04B7/243C04B12/005C04B28/006C04B2111/00784C04B18/12C04B22/064C04B22/062C04B12/04Y02P40/10
Inventor 吴求刚
Owner 中能化江苏地质矿产设计研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com