Non-standard Two Milling Grinding Processes To Applied Research, The Precise Make-up Make Up The Ball Method

The solution ball mill high energy low efficiency as well as delivers the size composition to be reasonable, the dissociation full rubbing product is a complex technical question, moreover is a worldwide basis difficult problem. Therefore, studies the new ball grinding technology, further raises the rubbing efficiency and reduces the energy consumption, as well as the improvement rubbing product quality is one has the great significance research subject.According to production investigation statistics, what the ore dressing plant rubbing flow applies is most widespread is two section of ball grinding rubbing flow, two section of ball grinding rubbing flow may overcome a section of ball grinding rubbing flow the shortcoming. It may aim in each section of ore mills the material granularity and the wear-resisting material nature difference, the rational distribution load, and easy to act accord i ng to two sect i on of ore mills different to give the material and the product granularity choice appropriate medium shape, the size and the allocated proportion. Therefore compares two section of ball grinding rubbing flow with a section of ball grinding rubbing flow to have the rubbing efficiency to be high, the rubbing product quality good, has crushed lightly, the monomer degree of dissociation higher merit.Put on makeup precisely following 2003 made up the ball method after a section of ball grinding rubbing flow development and the success application, in 2005 precisely puts on makeup makes up the ball method in the standard two section of ball grinding rubbing flow to obtain the success application. At the same time, devel oped has put on makeup precisely makes up the ball to the different ore degree of hardness, the different grinding machine specification and the different rotational speed rate grinding machine's compatible research, as well as will put on makeup precisely makes up the ball the synthetic study which move ahead with could the mouse unifies, passed through more than four years to put on makeup precisely makes up the ball commercial test research, completed has put on makeup precisely makes up the ball method the system development and has obtained the production application in several mine different production processes. What present paper research is in two section of ball grinding rubbing flow one kind of peculiar circumstance, is two section of grinding machine's volume disparity big flows, we called that it the non-standard two section of ball grinding rubbing flow, this kind of non-standard's two section of ball grinding rubbing flow has its own particularity, is raising the rubbing efficiency, to be balanced two section to shoulder as well as to rea lize high degree of fineness aspects and the standard two section of ball grinding rubbing and so on dissociation rubbing compares is more difficult.How did the present paper study has realized the high degree of fineness dissociation rubbing in this kind of rubbing flow. First studies the rubbing medium to realize the dissociation rubbing influence, and had pointed out the sphere medium to the fine grinding process's inelasticity, then proposed uses the cast iron section achievement two section of fine gr indings the rubbing medium superiority, and carried on the cast iron section to replace the steel ball to make the fine grinding medium the feasibility study. The experiment confirmed that the cast iron section replaces the steel ball while to enhance the product degree of fineness also to be possible to reduce the product the smashing, the improvement rubbing product quality.This paper's key point is the application puts on makeup precisely makes up the ball method to solve this k i nd of non-standard two section of ball grinding rubbing flow rubbing efficiency not high, rubbing product degree of fineness not high, the quality not high question. First has analyzed influence rubbing efficiency each kind of factor, the medium factor is affects the rubbing efficiency the key aspect. In this kind of flow's another difficulty is balanced which between the volume disparity big two section shoulders, a section of degree of fineness are excessively high when grinding machine handling ability will be low, a section of degree of fineness will be excessively low when will cause two section of fine grindings the loads to be heavy, immediate influence final rubbing degree of fineness. The medium factor is important, therefore requests to carry on medium the precise all ocated proportion, and according to the medium attrition rule, uses the more accurate supplement plan. What then must study is puts on makeup precisely makes up the ball method and the cast iron section application in this kind of flow whether feasible, whether to raise the rubbing efficiency. After puts on makeup precisely makes up the ball method and the cast iron section in the standard two section of rubbing flows the application process analysis, and analyzes the non-standard two section of ball grinding rubbing flow the particularity, the result confirmation is feasible, moreover may sharpen the handling ability largely and realize the high rubbing degree of fineness, and may reduce the product smashing effectively, improves the product quality. Finally summarized raised the rubbing efficiency the measure.After undergoing the fundamental research has carried on the commercial test confirmation. Because the people copper mine uses the right and wrong standard's two section of ball grinding rubbing flow, section of grinding machines are two 2.8×3.6m rice check ball mill, two sect i on of gr i nd i ng mach i nes have a 2.8×3.6m rice check ball mill. first section of grinding machine volume is=2×19 m3=38m3, two section of grinding machine volumes is only 19m3, one, second section of grinding machine volume ratio is 2:1, section of volumes is oversized, two section of grinding machine volumes are too small. When experiments the preceding section rubs when the radio station handling ability only 42-43 t/h, first section of degree of fineness can only achieve the-200 items to account for about 55%, second section of rubbing degree of fineness-200 items only reach about 80%, according to the laboratory test and the industrial production result, rubbing best degree of fineness should achieve the-200 items above 90%. Requests a section of rubbing degree of fineness after the computation to achieve the-200 items occupy 67-68% when two section to be able to realize the rubbing degree of fineness-200 items to account for above 90%. Therefore, first section uses puts on makeup precisely makes up the ball method, second section after passing through the steel ball and the cast iron section experimental contrast, decided that uses the cast iron section to replace the steel ball to take two section of fine grindings the rubbing medium. After a series of adjustments, determines finally a section rubs when the radio station hand ling ability has achieved when 51 t/h; Rubbing product degree of fineness accounted for 80.3% from the-200 items to enhance about 91%; Before rubbing floats Shan Haocong to experiment 25.10 kwh/t to fall after the exper i ment 24.41 kwh/t; Medium Shan Hao also falls before experimental is 733 g/t after the experiment is 707 g/t; As a result of the rubbing product degree of fineness's improvement, the returns-ratio raised three percentage points, enhances the scope to be remarkable. After experimenting successfully, grinding machine unit volume utilization factor by 0.99 t/m3. when enhances to 1.24 t/m3, enhances 25.25%. So Yinmin copper mine in 2007 the whole year increases the economic efficiency amounted to 33,269,500 Yuan, the additional profit has amounted to 23,213,100 Yuan, the economic efficiency was very remarkable. The proof in the non-standard two break in the rubbing flow to use puts on makeup makes up the ball method is precisely successful, the key adjusts the good two section of load equalization.