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

Operation method for efficiently recycling chromium element

An operation method and element technology are applied in the field of efficient recycling and utilization of chromium elements, which can solve problems such as resource waste, and achieve the effects of reducing molten iron consumption, reducing production costs, and simple operation process.

Inactive Publication Date: 2021-03-05
XINJIANG BAYI IRON & STEEL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at the present stage, the grinding bodies replaced by ball mills are all disposed of in the form of steel scrap. In the steelmaking process, the grinding bodies are directly added to the scrap hopper as scrap steel, and then converted into qualified molten steel again through the process of adding scrap steel to molten iron for smelting. This method can only utilize 90% of the iron element in the grinding body, and other elements such as chromium, silicon, manganese, etc. have not been effectively utilized, resulting in a waste of existing resources

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
  • Operation method for efficiently recycling chromium element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] An operation method for efficient recovery and utilization of chromium elements. The method is to control the free oxygen content of the steel ladle to below 30ppm after the deoxidation and alloying process of the converter, and cast and forge the grinding body into the steel ladle through the alloy silo, and cast the grinding body of each furnace of steel The amount of forging to be added is determined according to the following formula, where the heat required for melting the grinding body of a 1kg grinder is as follows, and then the amount of grinding body to be added can be determined according to the heat margin in the furnace:

[0024] Q grinding body = m grinding body × {C solid (t melting - t initial) + melting latent heat of grinding body + C liquid (t out - t melting)}

[0025] In the formula: Q grinding body - cooling effect of grinding body;

[0026] m Grinding body—amount of grinding body added;

[0027] C solid, C liquid—the average specific heat capacity...

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 discloses an operation method for efficiently recycling chromium element. The operation method for efficiently recycling the chromium element comprises the steps that after a converter deoxidation alloying link, the free oxygen content of a steel ladle is controlled to be below 30ppm, grinding medium casting and forging pieces are fed into the steel ladle through an alloy bin, and the addition amount of the grinding medium casting and forging pieces in each batch of steel is determined according to the given formula in the invention, wherein the heat required for melting 1kg of the grinding medium of a grinding machine is 1441.97 kJ, and then the addition amount of the grinding medium can be determined according to the heat surplus in the furnace. The operation method for efficiently recycling the chromium element can greatly improve the recycling rate of the chromium element, reduce resource waste and improve the production benefits of enterprises.

Description

technical field [0001] The invention relates to an operation method for efficient recovery and utilization of chromium element. Background technique [0002] The grinder is the key equipment for crushing the material after it is crushed. According to the different discharge methods, the grinder can be divided into two types: grid type and overflow type, and can be divided into dry type and wet type. The grinder is It consists of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. The cylinder is a long cylinder made of steel plate. There is a grinding body inside the cylinder. The grinding body is divided into steel balls and steel segments. The material is selected according to the particle size of the grinding material. The material is loaded into the barrel through the hollow shaft at the feed end of the grinder. When the barrel of the grinder rotates, the grinding body is attached to the lining of the barrel due to inertia, c...

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): C21C7/00C21C5/28C22B7/00C22B34/32
CPCC21C7/0006C21C5/28C22B7/00C22B34/32Y02P10/20
Inventor 韩雨亮吴军孙学刚
Owner XINJIANG BAYI IRON & STEEL
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