Optimize Study On The Dressing Technology Of Anqian Mining Co.Ltd

This article has carried on the detailed elaboration to our country mineral resource survey, has analyzed our country iron ore market present situation and the iron ore production status, proposed to guarantee that our country national economy the steady progression, our country's steel and iron profession must maintain the sustainable development, must therefore enhance the resources unceasingly the use factor and expands the new resources. Raises the availability of resources including to raise the iron ore mountain availability of resources and the ore dressing plant availability of resources. But raises the ore dressing plant availability of resources mainly to lie in raises the dressing metal recovery.It has analyzed the Anshan Iron and Steel Company iron material supply situation, proposed the development uses the Hu jiamiao's iron ore resources the necessity. "Fifteenth five-year plan" the last stage Anshan Iron and Steel Company steel output will amount to 16,000,000 t, the iron material total demand 24,800,000 t. If maintains from produces the hard ore concentrate 83% proportions, "Fifteenth five-year plan" the last stage must increase from produces the hard ore concentrate 7,450,000t. But Anshan Iron and Steel Company important original, supplementary material base mining industry company, because long-term mining, the Dagushan iron ore, the eye outlying hill iron ore belongs to the mining last stage, cannot satisfy the request which the Anshan Iron and Steel Company develops. But the Hu jiamiao's sub-ore deposit has verified the geological reserve to reach 10 hundred-million t levels the extra large type iron deposits, regarding our country was the very precious strategic resources. As a result of historical and objective factor's influence, the Hu jiamiao sub-mining area already had formed at present the aspect which an ore multi-card, an area pick, from 1985 by the end of 2003, average year mining ore 1,500,000t. This area has 24 to mine the enterprise, because has not formed the unified plan and scale mining, causes this local the resources not to be able to obtain reasonably, effective, the full use. The overall planning, the reasonable development, the effective use, maximum limit enhance the Hu ancestral temple scrap casting ore deposit the availability of resources and the use level are very essential.Elaborated the Hu jiamiao's iron ore characteristic and the ore deposit present situation in detail, to processes this ore the saddle thousand mining industry Limited liability company dressing technical process to carry on the overall analysis and the research. Pointed out that this flow existence the subject matter is:The stave screening efficiency is low, enters rubs the granularity to be low; The cyclone stage efficiency is low, the overflow granularity is unstable; The middling circulation is small, in the flow the overground phenomenon is serious, the regeneration ore slime content is high, does not favor the classification work target optimization; The debris personal status is high, the metal returns-ratio is low, the mineral resource has not obtained questions and so on highly effective use. Proposed the research direction according to the existence question.Launched a crushing, grinding and classification system optimization of parameters, through adopts reduces the thick broken platoon ore granularity, broken machine realizes the even uniform ore, crammed full to give the ore, reduces the size of mesh, enhances sieves the piece percentage open area, measures and so on adjustment cyclone plant parameter, raised the stave screening efficiency, enters rubs the granularity-12mm content from 80-85% to enhance to 90% above, a grinding machine handling ability enhanced lOt/h, the stage efficiency enhanced 5%, the overflow granularity is stable.Has carried out the classification system parameters optimization research, sweeps the weak magnetism field intensity through the enhancement, increases sweeps measures and so on spiral work, enables the middling circulation slightly to have increases, the middling circulation personal status slightly has the drop, in the flow regenerates the ore slime to reduce obviously, the comprehensive debris personal status reduced 0.94%, the metal returns-ratio enhances 4.3%, the mineral resource use factor had the remarkable enhancement, gained in the rich experience for the processing similar poor hematite's dressing technical study.