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

Method for producing ferrosilicon by electric arc furnace smelting waste refractory material as raw material

A technology of waste refractory materials and refractory materials, which is applied in the field of electrometallurgy, can solve the problems that resource utilization is still in the research stage, and achieve the effect of resource utilization

Active Publication Date: 2020-07-24
NORTHEASTERN UNIV LIAONING
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] From the above analysis, it can be seen that the hazardous waste and solid waste generated in the current electrolytic aluminum, aluminum processing and power industries are treated separately, most of which are in the stage of harmless treatment, and effective resource utilization is still in the research stage. As a result, the environmental pollution problems of these solid wastes have not been fundamentally solved

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 ferrosilicon by electric arc furnace smelting waste refractory material as raw material
  • Method for producing ferrosilicon by electric arc furnace smelting waste refractory material as raw material
  • Method for producing ferrosilicon by electric arc furnace smelting waste refractory material as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The method for preparing aluminum silicon ferrosilicon by electric arc furnace smelting with waste refractory material as raw material comprises the following steps:

[0039] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;

[0040] Step 2, according to the composition of the target aluminum silicon ferroalloy: aluminum content 25%, silicon content 65%, the rest is iron, calcium, titanium and other trace metals, using the fixed carbon contained in the waste cathode carbon block as the reducing agent according to the chemical The metering ratio is used to calculate the mass of waste refractory materials, waste cathode carbon blocks and fly ash required to reduce metal oxides, and finally the mass ratio of waste refractory materials, fly ash and waste cathode carbon blocks is 1:6:4. Waste refractory materials, ...

Embodiment 2

[0044] The method for preparing aluminum silicon ferrosilicon by electric arc furnace smelting with waste refractory material as raw material comprises the following steps:

[0045] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;

[0046] Step 2, according to the composition of the target aluminum-silicon-ferroalloy: aluminum content 27%, silicon content 63%, the rest is iron, calcium, titanium and other trace metals, using the fixed carbon contained in the waste cathode carbon block as the reducing agent according to the chemical The metering ratio is used to calculate the mass of waste refractory materials, waste cathode carbon blocks and fly ash required to reduce metal oxides, and finally the mass ratio of waste refractory materials, fly ash and waste cathode carbon blocks is 1:3:2. Waste refractory materials, ...

Embodiment 3

[0050] The method for preparing aluminum silicon ferrosilicon by electric arc furnace smelting with waste refractory material as raw material comprises the following steps:

[0051] Step 1, the waste refractory material in the overhaul slag of the aluminum electrolytic cell, the waste cathode carbon block, and the fly ash are respectively made into powders, and the particle size is 100 mesh;

[0052] Step 2, according to the composition of the target aluminum silicon ferroalloy: aluminum content 31%, silicon content 58%, the rest is iron, calcium, titanium and other trace metals, using the fixed carbon contained in the waste cathode carbon block as the reducing agent according to chemical The metering ratio is used to calculate the mass of waste refractory materials, waste cathode carbon blocks and fly ash required to reduce metal oxides, and finally the mass ratio of waste refractory materials, fly ash and waste cathode carbon blocks is 1:1:1. Waste refractory materials, wast...

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 provides a method for preparing ferro-silicon-aluminum by using a waste refractory material as a raw material through smelting in an electric arc furnace. According to the method, the waste refractory material is used as the raw material; an aluminum cell waste cathode carbon block is used as a reducing agent; pulverized fuel ash is used as an additive to adjust the content of aluminum in the raw material; diatomite waste residues are used as an additive to adjust the content of silicon in the raw material; the aluminum oxide and silicon oxide-based material is subjected to high-temperature reduction in the electric arc furnace to prepare the ferro-silicon-aluminum alloy with certain components; in the high-temperature reduction process, the decomposition of cyanide in the waste cathode carbon block, and the volatilization and recovery of fluoride, chloride and alkali metals in the material are realized; and the comprehensive utilization of various hazardous wastes and solid waste is realized in the same process.

Description

technical field [0001] The invention relates to the field of electrometallurgy, in particular to a method for producing ferrosilicon by electric arc furnace smelting using waste refractory materials as raw materials. Background technique [0002] The production methods of aluminum silicon ferrosilicon are mainly divided into metal melting method and electrothermal reduction method. The metal melting method is to use pure metal aluminum, silicon, and iron to form alloys in a molten state according to a certain proportion; the electrothermal reduction method uses oxides containing aluminum, silicon, and iron as raw materials, and carbonaceous materials as raw materials. The reducing agent is used to prepare the alloy through reduction smelting in an electric arc furnace. Among them, the metal fusion method has problems such as reheating of pure metal, secondary burning loss and high production cost. The electrothermal reduction method also has problems such as shortage of pu...

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 Patents(China)
IPC IPC(8): C22B4/06C22B5/10C22B7/00C22C28/00C01D7/00
CPCC01D7/00C22B4/06C22B5/10C22B7/001C22C28/00Y02P10/20
Inventor 罗洪杰吴林丽徐建荣张志刚刘宜汉
Owner NORTHEASTERN UNIV LIAONING
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