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Stocking method for improving stability of blended material component
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A technology for mixing and stabilizing ore, applied in the direction of chemical property prediction, etc., can solve the problems of strict site requirements, cumbersome, difficult maintenance, etc., and achieve the effect of improving the stability rate and improving the stability rate.
Pending Publication Date: 2019-04-23
BAOTOU IRON & STEEL GRP
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However, the current mixing and mixing equipment requires a lot of investment, difficult maintenance, and strict requirements on the site, especially for iron materials with large particlesize composition and large fluctuations in composition, which is more cumbersome
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specific Embodiment approach
[0021] The object of the present invention is to provide a kind of stockpiling method that improves the stability of mixed ore components, which will be realized by the following specific embodiments:
[0022] In the first embodiment of the present invention, the present invention provides a stockpiling method for improving the stability of mixed ore components, comprising the following steps:
[0023] S1: According to the process requirements, formulate a pre-proportion plan for the mixed ore. Under the premise that the total amount of stock A is certain, determine the total number B of minerals participating in the batching and the weight M of each ore, and determine that each ore is in The ratio X in the entire stack;
[0024] S2: According to the on-site production situation, determine the number N of mixing ore batching bins that can be used for batching and the hourly feeding amount corresponding to each batching bin;
[0025] S3: According to the size relationship betw...
Embodiment 1
[0035] In this example, the total amount of stockpiles is about 160,000 tons on a wet basis, and the average flow rate is 1333t·h -1 , each heap takes 120h. See Table 3 for the specific stacking conditions at each stage. And the production and application of mixed ore proportion, mixed ore TFe, SiO 2 Stability rate, and corresponding TFe, SiO of sinter 2 The stability rate was statistically analyzed, and the same stacking process was used, and the plan of increasing the ratio of the rough towerpowder with uneven particle size composition was used as a comparative analysis of the effect of the stacking method of the present invention. The results are shown in Table 4.
[0036] In this embodiment, the ratio X ranges from 5% to 15%.
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Abstract
The invention discloses a stocking method for improving stability of a blended material component. A stock plan is made according to a magnitude relation between the total number B of minerals and thenumber N of blended material distributing chambers, the distributing condition of the material distributing chambers and the mineral hour blanking amount S in the participated material distributing chambers. A distributing material BLOCK is set according to the total stocking amount A and the number N of the blended material distributing chambers. When conditions of large number of minerals and small number of mineral chambers occur in a certain BLOCK, for realizing blanking of two or more minerals in the same chamber in the single BLOCK, mineral selection is performed according to an equal SiO2 principle. Namely the SiO2 contents of two selected minerals or more minerals are approximately same or similar. The single BLOCK is divided into multiple segments. According to a pre-portioned planned amount, a plurality of minerals are successively conveyed into the chamber and are successively conveyed out. Blanding of two or more minerals in the same chamber in the single BLOCK is realized, thereby ensuring stable mineral component of the mixed ore.
Description
technical field [0001] The invention belongs to the field of sintered ore production, and in particular relates to a method for improving the composition stability of mixed ore. Background technique [0002] The mixing of raw materials is to mix a variety of bulk raw materials according to a certain proportion, so as to make the composition uniform and reduce the fluctuation of the composition and particle size of iron-containing raw materials. Due to the SiO of the mixed ore in the sintering process 2 The fluctuation of TFe affects the basicity of sinter, while the fluctuation of TFe affects the stability of iron content of sinter. Therefore, the mixing of raw materials is an extremely important link in the sintering production process. It plays an extremely important role in improving the output and quality of sintering ore, reducing fuel consumption and stabilizing production. Important conditions for the technical indicators of consumption. [0003] Mixing and stackin...
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