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

Process method for producing inorganic fibers from red mud

A technology of inorganic fibers and process methods, applied in manufacturing tools, glass manufacturing equipment, etc., can solve the problems of complex process, high production cost, unable to meet the national "rock wool" technical standards, etc., and achieve simple process and low production cost. , Significant effect of social environmental protection benefits

Active Publication Date: 2018-01-09
BEIJING JINYARUN ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its technology needs to neutralize the red mud with acid, the process is complicated, and the production cost is high. Using acid as a neutralizing agent will produce harmful gases during the high-temperature melting process, which has a certain impact on the environment.
At the same time, the inorganic fibers produced can only barely meet the technical indicators of "mineral wool", but cannot meet the national technical standards of "rock wool", especially the indicator of "acidity coefficient"

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
  • Process method for producing inorganic fibers from red mud
  • Process method for producing inorganic fibers from red mud
  • Process method for producing inorganic fibers from red mud

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Red mud is used as the main ingredient, and its water content is controlled at 10-14% before batching. Add cement at a weight ratio of 1:0.1-0.15, add water and stir to mix evenly, and the total water content after mixing is controlled at 8-12%. 325 or 425 Portland cement is used as the curing agent for the cement.

[0018] The mixture is strongly pressed into a ball shape, about 4 x 6 x 8 cm, dried naturally, and solidified to form a ball block material. Then the ball block material, basalt ore block and coke are mixed evenly according to the weight ratio of 3.5:0.1~0.2:1 to form a semi-finished material; (the size of the basalt ore block is about 8×10×12cm, the SiO2 content is 45% , Al2O3 content of 14% or more is used as an acidity coefficient regulator; coke particle size 6-10cm, calorific value> 7000kca / k).

[0019] Semi-finished materials are melted at a high temperature in a melting furnace, and the temperature during high-temperature melting is 1400-1550°C to f...

Embodiment 2

[0024] Red mud is used as the main ingredient, and its water content is controlled at 10-14% before batching. Add cement and silica powder at a weight ratio of 1:0.15:0.1-0.2, add water and mix well, and the total water content after mixing is controlled at 8-0. 12%; the cement adopts 325 or 425 Portland cement, which is used as a curing agent; the silica powder is 325-500 mesh, (SiO2 content is more than 95%), and is used as an acidity coefficient regulator.

[0025] The mixture is strongly pressed into a ball shape, about 4 x 6 x 8 cm, dried naturally, and solidified to form a ball block material. Then the ball block material and coke are batched according to the weight ratio of 3.5:1, and mixed evenly to form a semi-finished material; (coke particle size 6 ~ 10cm, calorific value > 7000kca / k).

[0026] The semi-finished material is melted at high temperature in the melting furnace. The temperature during high-temperature melting is 1550-17000°C, and high-pressure oxygen is ...

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
melting pointaaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a process method for producing inorganic fibers with red mud as a primary material and belongs to the field of comprehensive utilization of red mud. A curing agent and an acidity coefficient adjustor are added into red mud to be fused with coke at a high temperature, Si, Ca, Fe, Al, Na and Mg in the red mud, the curing agent and the acidity coefficient adjustor are fully utilized, and the inorganic fibers are produced with the red mud as a primary material. The proportion of the red mud can reach up to 70% or above, the red mud pollution is effectively treated, and theinorganic fibers can reach the rock wool grade, thereby achieving obvious economical benefit and social and environment-friendly benefits. The process method is simple in process and low in production cost, and scale production with comprehensive utilization of red mud can be achieved.

Description

[0001] The present invention is a divisional application with the filing date of 2015.10.13, the application number of 2015106684305, and the title of the invention "Process Method for Producing Inorganic Fiber Using Red Mud". Technical field: [0002] The invention belongs to the field of comprehensive utilization of red mud, in particular to a process method for producing inorganic fibers by using red mud. Background technique [0003] Red mud is the residue produced after bauxite is extracted from alumina through the "Bayer method" or "sintering method". The amount of red mud produced is related to the production method and ore grade. Generally, 1-1.7 tons of slag will be produced for every ton of alumina produced. These slags are reddish brown because they are rich in iron oxide. They are called red mud and belong to Hazardous solid waste, the lower the grade of raw materials, the greater the amount of red mud produced. As the world's four largest alumina producers, Chi...

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): C03B37/00
Inventor 张勇张欣张银国
Owner BEIJING JINYARUN ENVIRONMENTAL PROTECTION TECH CO LTD
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