Supercharge Your Innovation With Domain-Expert AI Agents!

Method for processing and modifying casting dust into natural rubber reinforcing agent

A natural rubber, processing and modification technology, applied in the field of solid waste resource recycling, can solve the problems of high energy consumption, achieve low energy consumption, reduce primary energy consumption, and simple process

Active Publication Date: 2020-09-15
十堰力同新材料科技有限公司
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water glass is the key raw material for producing white carbon black, but water glass needs to melt sodium carbonate and quartz sand at high temperature, which consumes a lot of energy

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
  • Method for processing and modifying casting dust into natural rubber reinforcing agent
  • Method for processing and modifying casting dust into natural rubber reinforcing agent
  • Method for processing and modifying casting dust into natural rubber reinforcing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: use a micropowder mill to grind 100 parts by mass of foundry dust to an average particle size of less than 50 microns, and then use a magnetic separator to remove iron;

[0026] The second step: use industrial hydrochloric acid with a concentration of 20% as the pickling solution to pickle the foundry dust after iron removal, use 1000 parts by mass of pickling solution for every 100 parts by mass of foundry dust, and pickle under slow stirring for 4 h, let it stand until the foundry dust is completely settled, and then separate the solid and liquid by filtration;

[0027] Step 3: Wash the pickled foundry dust with water until neutral, add 440 parts by mass of tap water to 100 parts by mass of foundry dust, then add 60 parts by mass of 20% hydrofluoric acid solution, and stir mechanically until the foundry dust is in suspension Dispersed state and fully mixed for 8 hours; slowly add 5% ammonia water under continuous stirring until the pH value of the solution is ...

Embodiment 2

[0030] The first step: the same as the first step in embodiment 1;

[0031] Second step: same as the second step of embodiment 1;

[0032] Step 3: Wash the pickled foundry dust with water until neutral, add 200 parts by mass of tap water to 100 parts by mass of foundry dust, then add 300 parts by mass of 20% hydrofluoric acid solution, and stir mechanically until the foundry dust is in suspension Dispersed state and fully mixed for 8 hours; slowly add 5% ammonia water under continuous stirring until the pH value of the solution is greater than 12, continue to stir for 2 hours after adding ammonia water, let stand to make the solid matter fully precipitate, separate the solid and liquid by filtration, and the solid precipitate Wash and dry for later use;

[0033] The fourth step: the same as the fourth step of Example 1; the obtained modified foundry dust rubber reinforcing agent is marked as FD-40.

Embodiment 3

[0035] The first step: the same as the first step in embodiment 1;

[0036] The second step: use industrial hydrochloric acid with a concentration of 20% as the pickling solution to pickle the foundry dust after iron removal, use 2000 parts by mass of pickling solution per 100 parts by mass of foundry dust, pickle under slow stirring for 8 h, let it stand until the foundry dust is completely settled, and then separate the solid and liquid by filtration;

[0037] Step 3: Wash the pickled foundry dust with water to neutrality, add 100 parts by mass of foundry dust to 100 parts by mass of tap water, then add 400 parts by mass of 20% hydrofluoric acid solution, and mechanically stir until the foundry dust is in suspension Dispersed state and fully mixed for 8 hours; slowly add 5% ammonia water under continuous stirring until the pH value of the solution is greater than 12, continue to stir for 2 hours after the ammonia water is added, let it stand for the solid matter to fully pre...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for processing and modifying casting dust into a natural rubber reinforcing agent. The method comprises the following steps: grinding the casting dust, removing iron,and removing soluble impurities by hydrochloric acid pickling; then, using a hydrofluoric acid solution to partially dissolve silicon dioxide in the casting dust to generate fluosilicic acid; adding ammonia water to enable fluosilicic acid to generate nanometer silicon dioxide on the surfaces of the residual casting dust particles in situ; and carrying out solid-liquid separation, and carrying outgrinding and surface modification on the precipitated powder to obtain the casting dust processing modified rubber reinforcing agent. The content of nanometer silicon dioxide in the casting dust reinforcing agent can be adjusted by changing the dosage of hydrofluoric acid, so that the reinforcing performance of the casting dust reinforcing agent is adjusted; and the whole technological process issimple, energy consumption is low, emission is little, the obtained casting dust reinforcing agent can partially or completely replace carbon black or white carbon black to be used for producing natural rubber products, recycling of casting waste is facilitated, primary resource consumption is reduced, and then the raw material cost of the natural rubber products is reduced.

Description

technical field [0001] The invention relates to the field of recycling and utilization of solid waste resources, in particular to a method for processing and modifying foundry dust into a natural rubber reinforcing agent. Background technique [0002] Foundry is the foundation of industry. The foundry industry will generate a large amount of solid waste, mainly including foundry waste sand, foundry waste slag and foundry dust, and the overall emission is huge. At present, my country's treatment methods for these foundry wastes mainly include waste sand regeneration, production of building materials (cement additives, pavement bricks, autoclaved bricks), roadbed materials and landfill. However, the amount of foundry waste to be treated is very limited, and a large amount of waste is still disposed of in open-air stacking, which not only occupies a large amount of land resources, but also pollutes the local natural environment. In patent CN104892982B, waste foundry sand is d...

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): C08K11/00C08K9/04C08K9/06C08K9/02C08K3/36C08L7/00
CPCC08K3/36C08K9/02C08K9/04C08K9/06C08K11/005C08K2201/011C08L7/00
Inventor 王法军刘黄娟雷胜欧军飞李文阿里达·阿米法兹力
Owner 十堰力同新材料科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com