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

Method for producing aluminum chloride, silicon chloride and ferric chloride by utilizing coal gangue

A technology of coal gangue and silicon chloride, applied in the direction of aluminum chloride, silicon halide compound, aluminum halide, etc., can solve the problem of insufficient utilization of carbon resources, achieve comprehensive utilization, simple technical solutions, The effect of increasing added value

Inactive Publication Date: 2013-02-13
NORTHEASTERN UNIV
View PDF14 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The past utilization of aluminum resources in coal gangue includes the use of coal gangue to prepare aluminum hydroxide (Chinese patent No. 94113062.2), alumina (Chinese patent No. 200810051316.8), aluminum chloride (Chinese patent No. Patent), aluminum sulfate (Chinese Patent No. 201110209467.3), etc.; and the utilization of silicon resources in coal gangue is mostly reflected in the production of building materials; iron resources in coal gangue are used to produce iron-containing flocculants (patent No. 201010131669.6 Chinese patent), water purifying agent (Chinese patent No. 200910147845.2) and alloy (Chinese patent No. 200910089248.9), etc. However, most of the above-mentioned patents on the utilization of coal gangue focus on the utilization of one or two elements, As a result, the carbon resources in coal gangue are not fully utilized

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 producing aluminum chloride, silicon chloride and ferric chloride by utilizing coal gangue
  • Method for producing aluminum chloride, silicon chloride and ferric chloride by utilizing coal gangue
  • Method for producing aluminum chloride, silicon chloride and ferric chloride by utilizing coal gangue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 2000g of coal gangue whose composition is shown in Table 1, calculate the content of each component and the C content required for the chlorination reaction of each oxide in equations (1)-(8), and list them in Table 2.

[0037] Table 2 The content of each component of coal gangue and the amount of C required for chlorination reaction

[0038] Element Content (g) Amount of C required for chlorination reaction (g) SiO 2 850.8 170.2 al 2 o 3 603.6 106.5 Fe 2 o 3 168.2 18.9 MgO 10.8 1.6 CaO 25.4 2.7 TiO 2 23.0 3.5 K 2 o 6.6 0.4 Na 2 o 5.2 0.5 C 262.2 /

[0039] (1) According to Table 2, the total C content required for the chlorination reaction of oxides in coal gangue is 304.3g, while the coal gangue itself contains 262.2g of C, and the difference between the two is 42.1g. In the chlorination reaction of coal gangue, add 60g of graphite powder, mix gangue and charcoal to form a m...

Embodiment 2

[0046] Take 5000g of coal gangue, calculate the content of each component and the C content required for the chlorination reaction of each oxide in equations (1)-(8), and list them in Table 3.

[0047] Table 3 Contents of each component of coal gangue and the amount of C required for chlorination reaction

[0048] Element Content (g) Amount of C required for chlorination reaction (g) SiO 2 2127.0 425.4 Al 2 o 3 1509.0 266.3 Fe 2 o 3 420.5 47.3 MgO 27.0 4.1 CaO 63.5 6.8 TiO 2 57.5 8.6 K 2 o 16.5 1.1 Na 2 o 13.0 1.3 C 655.5 /

[0049] (1) According to Table 3, the total C content required for the chlorination reaction of oxides in coal gangue is 760.9g, while the content of C in coal gangue itself is 655.5g, and the difference between the two is 105.4g. Considering the measurement error and the loss caused during the feeding process, 127g of activated petroleum coke was added to the chlorin...

Embodiment 3

[0056] (1) According to Table 3, the total C content required for the chlorination reaction of oxides in coal gangue is 760.9g, while the content of C in coal gangue itself is 655.5g, and the difference between the two is 105.4g. Considering the measurement error and the loss during the feeding process, add 158g of activated petroleum coke to the chlorination reaction of coal gangue, mix the gangue with bituminous coal or blue carbon to form a mixture, and crush the mixture to ≤160 mesh;

[0057] (2) Put the crushed mixture in a chlorination furnace, and pass chlorine gas into the furnace at 1000°C for chlorination, and the flow rate of chlorine gas is 0.12m 3 / s;

[0058] The obtained slag is directly discharged, and the obtained furnace gas is sent to the dust collector for dust removal treatment, and the temperature in the dust collector is controlled to 600°C;

[0059] (3) Condensate the dedusted gas at 400°C, 220°C and 2°C in sequence to obtain crude AlCl 3 , FeCl 3 an...

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 belongs to the field of resource recycling and utilizing, and particularly relates to a method for producing aluminum chloride, silicon chloride and ferric chloride by utilizing coal gangue. The method provided by the invention comprises the following steps of mixing a carbonaceous reducing agent with the theoretical additive amount of 1.2-1.5 times and coal gangue to prepare a mixture, crushing the mixture until the granularity is smaller than or equal to 160 meshes, putting the crushed mixture into a chlorination furnace, introducing chlorine into the furnace, introducing the obtained furnace gas into a dust remover for dust removal, condensing the gas to dust removal at 370-420 DEG C, 200-250 DEG C and 0-4 DEG C to sequentially obtain coarse AlCl3 liquid, FeCl3 liquid and SiCl4 liquid, and distilling the coarse AlCl3, FeCl3 and SiCl4 to obtain pure AlCl3, FeCl3 and SiCl4 products. According to the method, the comprehensive utilization of the coal gangue resources is realized, the additional value of products is improved, the technical scheme is simple and practicable and the method has extremely good popularization value.

Description

[0001] technical field [0002] The invention belongs to the field of resource recovery and utilization, and in particular relates to a method for producing aluminum chloride, silicon chloride and ferric chloride by using coal gangue. Background technique [0003] Coal gangue is the waste slag produced during coal mining, washing and processing, including excavation gangue produced during rock roadway excavation, gangue mined from roof, floor and rock interlayers sandwiched in coal seams during coal mining, and coal washing The gangue discharged during the production process of the factory is one of the largest industrial solid wastes in China. [0004] The comprehensive utilization rate of coal gangue in our country is very low at present. A large amount of coal gangue has been piled up, occupying fertile fields, blocking river courses, and seriously affecting the ecological environment. In addition, coal gangue contains certain combustibles, which spontaneously combust un...

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
IPC IPC(8): C01F7/56C01B33/08C01G49/10
Inventor 王兆文胡宪伟高炳亮石忠宁于江玉
Owner NORTHEASTERN UNIV
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