Method for producing pre-sintering material

Abstract

The invention relates to the field of production of pre-sintering materials, in particular to a method for producing a pre-sintering material. The method comprises steps as follows: (1) components including 38.933% of iron phosphorus, 47.08% of iron oxide red, 13.387% of strontium carbonate, 0.4% of calcium carbonate and 0.2% of high-phosphorus soil are weighed in percentage by weight; (2) the iron oxide red and strontium carbonate mixture obtained in the step (1) is mixed with water with the weight being 1.5 times that of the mixture and stirred for 20 min; (3) the iron oxide red and strontium carbonate mixture obtained in the step (2) is pumped into a ball mill and mixed with an iron phosphorus, calcium carbonate and high-phosphorus soil mixture, and the obtained mixture is subjected to ball milling and mixing for 30-60 min; (4) the iron phosphorus, iron oxide red, strontium carbonate, calcium carbonate and high-phosphorus soil mixture obtained in the step (3) is pumped into a stirring storage tank, passes by a dewaterer, enters a horizontal stirrer to be uniformly stirred and is sent into a rotary kiln to be sintered in the oxidizing atmosphere at the temperature of 1,320-1,345 DEG C for 8-10 h; (5) a ball material obtained in the step (4) passes by a cooling cylinder and then enters a through type ball mill to be crushed and milled into coarse powder of 4-6 mu m.

Description

technical field [0001] The invention relates to the field of calcined material production, in particular to a method for producing calcined material. Background technique [0002] There are many problems in the production of pre-fired materials by the rotary kiln dry method, such as large dust, serious environmental pollution, high work intensity, and endangering the health of workers, and there are many process steps, uneven mixing, and poor consistency of the properties of the fired materials. class shortcomings. [0003] The general dry method ingredients include iron and phosphorus drying, fine grinding, and then mixed with iron red, strontium carbonate / barium carbonate, fine grinding, pelletizing, and then sent to the rotary kiln for sintering through the grate machine. The dust produced in this process is very large, and because the particle size of iron red, strontium and barium is too fine, it will stick to the wall during the fine grinding process, resulting in une...