-
Brand
-
Craftsmanship
Tengfei Building Materials
Application range and characteristics of sintered calcium aluminate
Release time:
2020-12-25
Author:
Source:
Mainly used in LF furnace, open furnace, converter ladle refining, remove sulfur, oxygen and other impure substances in molten steel, reduce the content of harmful elements and impurities in steel, suitable for general carbon steel, high carbon steel, high and low alloy steel. In the foreign countries already mature application, such as Korea, Japan, Europe and the United States and other developed countries.
The calcium aluminate produced by Zhulin Tengfei special building materials Factory has uniform chemical composition, low melting point and fast melting speed, which can shorten the smelting time. No fluorine, no erosion of lining and ladle; Compact structure, no water absorption, convenient for storage and transportation; Because the phase is stable and slag is formed quickly, it can reduce dust pollution to steel works and stabilize the refining process. Does not contain hydrogen, nitrogen, carbon and other impurities, is conducive to improve the quality of steel.
Usage:
When it is mainly deoxidized, it is directly added to the bottom of the bag before discharging steel. The addition amount is determined by the carbon content of the steel at the end point, and is generally added by 4-6kg/1000kg steel; 1/4 before steel, add ferromanganese, ferrosilicon and aluminum routinely; After the steel is produced, the carbon structure steel is routinely added with manganese and ferrosilicon, no other alloy or aluminum feeding line is needed, and the molten steel inside the package only needs to be blown with argon for refining; The amount of carbonizing agent (silicon carbide) can be reduced by 30-50%.
For desulfurization, 1/3 of the usage amount of dacron should be added to the bottom of the package in advance, but it should be added to the impact position of the steel flow at the bottom of the package; With the outflow of steel, add 2/3 of the quantity; The amount of steel used is 6-8kg/1000kg, depending on the sulfur content at the beginning of the steel tablanyuan and the effect of use.
Characteristics of sintered calcium aluminate:
1. Uniform chemical composition, low melting point, fast melting speed, which can shorten the refining time;
2. No fluorine, no erosion of lining and ladle;
3. Compact structure, no water absorption, convenient for storage and transportation;
4. As the phase is stable and slag is formed quickly, dust pollution of steel works can be reduced and refining process can be stabilized;
5, no hydrogen, nitrogen, carbon and other impurities, is conducive to improve the quality of steel.
Previous Page:
Next Page: