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

A process for producing ferrochrome alloy with tunnel kiln

A technology of ferrochrome alloy and tunnel kiln, which is applied in the technical field of producing ferrochrome alloy in tunnel kiln, can solve the problems of high working temperature of electric furnace, dust pollution environment, harsh working environment, etc., and achieves the advantages of reducing heat loss, controlling pollution and reducing energy consumption. Effect

Active Publication Date: 2022-03-25
乔柏人
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, in the production process of ferrochrome alloy, there are industry-specific problems: 1. High energy consumption, high power consumption, and high cost
2. High-temperature evaporative gas mist entrains dust to pollute the environment. 3. The working temperature of the electric furnace is high
4. Large heat loss and serious energy waste
5. Operators work at high temperature, with high labor intensity and harsh working environment

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] Phase 1: Pelletizing

[0063] 1. Material pretreatment:

[0064] (1) After secondary crushing, the raw chrome ore powder mixed with some lumps is sent to the raw material storage bin by the conveyor for standby.

[0065] The ferrochrome ore in the described step (1) is Cr 2 o 3 The content is 20-50%, containing Fe 2 o 3 In 15 ~ 40% chromium iron ore.

[0066] (2) After the block carbonaceous reducing agent is subjected to secondary crushing, it is sent to the carbonaceous reducing agent storage bin through the conveyor for standby.

[0067] The carbonaceous reducing agent in the step (2) is coal, coke, petroleum coke, and others with a carbon content of more than 75%, a fixed carbon content of 60-80%, a volatile matter of less than 20%, and an ash content of less than 8%. Carbon-based raw materials.

[0068] (3) After the secondary crushing of the massive siliceous adjustment material, it is sent to the siliceous adjustment material storage bin through the convey...

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 ferrochrome alloy production process, in particular to a process for producing the ferrochrome alloy with a tunnel kiln. The present invention is achieved through the following technical solutions: a process for producing ferrochrome alloy with a tunnel kiln, which is characterized in that the process includes the following three stages: A: making pellets; B: reducing calcination in a tunnel kiln; C: waste slag and alloy separation. The present invention re-establishes a production method of ferrochromium alloy, and this production method can be applied to various products such as ferronickel alloy, ferromanganese alloy, cobalt alloy, ferro-titanium alloy, metal chromium, metal nickel, special steel, steel, iron, etc. in production.

Description

technical field [0001] The invention belongs to the ferrochrome alloy production process, in particular to a process for producing the ferrochrome alloy with a tunnel kiln. Background technique [0002] Ferrochromium: It is a ferroalloy composed of chromium and iron as the main components, and is an important alloy additive for steelmaking. In addition to the main components of chromium and iron, it also contains impurities such as carbon, silicon, sulfur, and phosphorus. Ferrochromium contains 55% to 75% of chromium, which can be divided into high carbon (4% to 10%C), medium carbon (0.5% to 4%C), low carbon (>0.15% to 0.5%C) and Micro carbon (≤0.15%C) ferrochrome. High-carbon ferrochrome is also called carbon ferrochrome, and medium, low and micro-carbon ferrochrome is also called refined ferrochrome. [0003] The addition of chromium to steel can significantly improve the oxidation resistance of steel and increase the corrosion resistance of steel. Chromium is conta...

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): C21B13/00C22B1/242C22B1/02B03C1/02
CPCC21B13/006C22B1/242C22B1/02B03C1/02Y02P10/20
Inventor 乔柏人吴丽花李密成乔英侠郭焕超冯溅潮
Owner 乔柏人
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