Sintering synergistic agent and use method thereof

Abstract

The invention discloses a sintering synergistic agent comprising the following components in percentage by weight: 20-30% of active calcium oxide with the activity of more than or equal to 280 ml / 4N-HCl, 20-30% of active magnesium oxide with the activity of more than or equal to 180 ml / 4N-HCl, 20-30% of fluorite, 5-10% of diboron trioxide with the purity of more than or equal to 99% and 5-15% of copper sulfate with the purity of more than or equal to 95%, wherein the content of the active calcium oxide with the granularity of 0.074 mm is more than or equal to 70%; the content of the active magnesium oxide with the granularity of 0.074 mm is more than or equal to 60%; and the content of the fluorite with the granularity of 0.147 mm is more than or equal to 60%;. In the sintering synergistic agent disclosed by the invention, the copper sulfate can be replaced by 1-5% of potassium permanganate with the purity of more than or equal to 96%; the components are uniformly stirred in the proportions so as to form a product; in a sintering production process, 0.04-0.045 % of the sintered feeding material is added at back of a fuel bin; 5-8% of solid fuel consumption can be reduced; the utilization factor of a sintering machine is increased by about 1%; and the drum strength is improved by 1-2%.

Description

technical field [0001] The invention belongs to the category of metallurgical materials, and relates to a metallurgical chemical additive for steelmaking and sintering, in particular to a sintering synergist capable of reducing sintering energy consumption and its application method. Background technique [0002] Domestic sintering production currently adopts the mixed use of coke and coal. Due to the difference in the heat generated by the combustion of coke powder and anthracite powder, the mixed use of coke powder and anthracite powder will inevitably increase the difficulty of controlling the fuel ratio, which will have an adverse effect on reducing solid fuel consumption; Unreasonable fuel particle size also has a great impact on solid consumption, such as: too coarse fuel particle size, local combustion of the mixture, sintering material cannot be burned to the bottom, lower sintering machine utilization factor, lower sinter output, and too fine fuel particle size, maki...

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Problems solved by technology

[0002] Domestic sintering production currently adopts the mixed use of coke and coal. Due to the difference in the heat generated by the combustion of coke powder and anthracite powder, the mixed use of coke powder and anthracite powder will inevitably increase the difficulty of controlling the fuel ratio, which will have an adverse effect on reducing solid fuel consumption; Unreasonable fuel particle size also has a great impact on solid consumption, such as: too coarse fuel particle size, partial combustion of mixture, sintering material cannot be burned to the bottom, lower sintering machine utilization factor, lower sinter output, and too fine fuel particle size, making the material layer breathable During the sintering process, part of the coke powder in the mixture will be sucked away, resulting in incomplete sintering of the sintered material and a decrease in the output of sintered ore

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