A kind of slagging agent and preparation method thereof

Abstract

The invention discloses a slagging constituent. Raw materials of the slagging constituent comprise the following components: by weight, 20%-40% of aluminic acid soil and 60%-80% of ferrous acid aluminum ore. The slagging constituent comprises the following effective components: by weight, 8%-15% of SiO<2>, smaller than or equal to 10% of CaO, 40%-52% of Al<2>O<3>, 7%-14% of Fe<2>O<3>, smaller than or equal to 0.05% of S, smaller than or equal to 0.05% of P, and the balance impurities. Further, particle sizes of the aluminic acid soil and the ferrous acid aluminum ore are both 5mm-30mm. The invention provides a preparation method of the slagging constituent. The preparation method of the slagging constituent comprises the steps that (a) the raw materials are broken to particles with the particle sizes of 5mm-30mm through a jaw crusher; (b) the particles in the step (a) are stirred to mix manually; (c) the particles after being mixed in the step (b) are put into a kang to dry, the drying temperature is 180 DEG C + / - 50 DEG C, the drying time is determined by the quantity, and the dry time generally is 4 hours; (d) the particles after being dried in the step (c) are packed into a bag to be an end product. The slagging constituent and the preparation method of the slagging constituent can prolong the service life of a steel ladle brusque, reduce the cost of per ton steel, and are environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of smelting auxiliary materials, and in particular relates to a slagging agent and a preparation method thereof. Background technique [0002] The invention of application number: 200910103667.3 discloses a converter dephosphorization composite slagging agent, which contains the following components by weight percentage: active lime: 30-40%; rolled steel sheet: 30-40%; quartz sand: 13-18%; Soda: 11-13%; Fluorite: 0-6%; the composite slagging agent is made by crushing the above-mentioned raw materials into powder, mixing and sieving, and then pelletizing. The composite slagging agent of the present invention has a low melting point and can quickly form slagging; the composition is uniform and the performance is stable; the dephosphorization agent has a large phosphorus capacity and high dephosphorization efficiency, and can be applied to the dephosphorization of medium-high phosphorus molten iron converter; ...

AI Technical Summary

Problems solved by technology

Although the content of fluorite in this technical solution is small, the content is still controlled at 0-6%. Fluorite slag is used in the converter in the traditional steelmaking process, and the slag adjustment speed is fast, but the disadvantages are too great, and the slag is not durable. Fluorite is composed of CaF and CaF 2 Composition, not only serious environmental pollution, but also damage the furnace lining, CaF 2 >2% It is difficult to improve the life of the furnace, and the ladle lining is severely eroded. The gas and water generated when using fluorite as a slagging agent do not meet environmental protection regulations, shorten the service life of the ladle lining, and increase the cost per ton of steel

The use of fluorspar pollutes water quality and damages equipment