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Vanadium ore roasting furnace grate

A technology for roasting furnace and grate bar, applied in the field of kiln, can solve the problems of grate bar bending deformation, low production efficiency and high production cost, and achieve the effects of increasing load, improving service life and improving production efficiency

Active Publication Date: 2018-04-17
HUBEI GENGLIAN WEAR RESISTANT MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the common method for extracting vanadium from vanadium ore in my country is to use the sodium roasting process. The vanadium ore is crushed, added with sodium chloride and fuel, ground and extruded into balls, and the roasting temperature in the flat kiln reaches 950°C. Under corrosion, the quality of the furnace bar has become a key link affect

Method used

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  • Vanadium ore roasting furnace grate
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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The chemical composition and mass percentage of the grate wrapping layer are: 3.80% carbon, 4.50% silicon, 12.00% chromium, 0.30% manganese, 1.00% copper, 0.10% rare earth, and the balance is iron and unavoidable impurities.

[0031] According to the above ratio, the skeleton is added, and the grate made by the conventional sand casting process has a service life of 14 months after trial, which exceeds the service life of the grate produced by other manufacturers.

Embodiment 2

[0033] The chemical composition and mass percentage of the grate wrapping layer are: 4.80% carbon, 5.50% silicon, 16.00% chromium, 0.50% manganese, 2.00% copper, 0.30% rare earth, and the balance is iron and unavoidable impurities.

[0034] According to the above ratio, the skeleton is added, and the grate made by the conventional sand casting process has a service life of 18 months after trial, which exceeds the service life of the grate produced by other manufacturers.

Embodiment 3

[0036] The chemical composition and mass percentage of the furnace bar coating layer are: 4.50% carbon, 5.00% silicon, 14.00% chromium, 0.40% manganese, 1.50% copper, 0.20% rare earth, and the balance is iron and unavoidable impurities.

[0037] According to the above ratio, the skeleton is added, and the grate made by the conventional sand casting process has a service life of 16 months after trial, which exceeds the service life of the grate produced by other manufacturers.

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Abstract

The invention discloses a vanadium ore roasting furnace grate. The vanadium ore roasting furnace grate comprises a framework and a wrapping layer on the outside of the framework; the wrapping layer comprises, by mass, 3.80-4.80% of carbon, 4.50-5.50% of silicon, 12.00-16.00% of chromium, 0.30-0.50% of manganese, 1.00-2.00% of copper, 0.10-0.30% of rare earth, and the balance iron and inevitable impurities; the framework and the wrapping layer of the furnace grate are cast into a whole; the framework comprises an upper transverse beam and a lower transverse beam which are symmetrically arrangedin parallel; the upper transverse beam extends from the middle to the two sides and is provided with the camber; the upper transverse beam and the lower transverse beam are connected through a plurality of uniformly-arranged supporting columns; the two sides of each supporting column are provided with inclined struts, and the inclined struts are supported and connected between the upper transverse beam and the lower transverse beam, so that the integrated framework is formed; and the two ends of the lower transverse beam stretch out of the wrapping layer, so that installation parts, on a furnace fame, of the furnace grate are formed. The vanadium ore roasting furnace grate provided by the invention is obtained through a common sand casting technology, has oxidation resistance, corrosion resistance, high temperature resistance, abrasion resistance and the like and also has the fracture resistance and bending resistance, the service life of the vanadium ore roasting furnace grate is three times or longer of that of furnace grates produced by other factories, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of kilns, in particular to a furnace bar of a vanadium ore roasting furnace. Background technique [0002] Vanadium is the country's national defense strategic material, known as the metal "vitamin", and is the main element in the production of alloy steel and super alloys. It is widely used in metallurgy, chemical industry, atomic energy, aviation and emerging vanadium batteries and other fields. At present, the common method for extracting vanadium from vanadium ore in my country is to use the sodium roasting process. The vanadium ore is crushed, added with sodium chloride and fuel, ground and extruded into balls, and the roasting temperature in the flat kiln reaches 950°C. Under corrosion, the quality of the furnace bar has become a key link affecting normal production. The material used for the design of the flat kiln furnace bar in normal vanadium ore production is ZG03Cr26Ni5Mo3N corrosion-resistant cas...

Claims

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Application Information

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IPC IPC(8): C22B1/02F27D5/00C22C38/02C22C38/04C22C38/20
CPCC22B1/02C22C38/005C22C38/02C22C38/04C22C38/20F27D5/00
Inventor 杨宗联黄太科李华周姚自海
Owner HUBEI GENGLIAN WEAR RESISTANT MATERIALS TECH