东沟特大型钼矿床矿石物质组成及选矿新工艺

通过对河南汝阳东沟特大型钼矿床矿石物质组成及选矿新工艺的论证评价。揭示了该矿床物质成分的复杂性及选矿性能，得出以下认识：1）赋矿岩石以碳酸盐与铝硅酸盐为主要组分，受后期构造热液影响，矿石破裂变形、扭曲以及交代现象十分普遍，因而矿石具多种复杂结构，这些因素可对矿石的选矿性产生严重影响；2）对选矿方案给予多方面论证，找出了矿石技术加工的难点及影响因素，并在选别过程中给予了充分考虑；3）可浮性试验。找出脉石矿物上浮所需时间及与目的矿物之间的关系；4）粗选试验，从七个方面对目的矿物的捕收剂及其用量和添加地点、磨段细度、脱泥考察、石英和硅酸钠用量等都进行了全面试验，并找出各方面适应矿石物质组成和选矿性能的楔合点，给出了一系列参数作为依据；5）钼精选试验，分别进行了再磨细度、抑制剂种类、全开路和浮选闭路流程等四方面试验，使最终产品的选别指标满足国家标准。结论：浮选使用70％-200目，再磨设置在83．5％-400目条件下，选用磷诺克斯与巯基乙酸钠配合，有效地抑制了黄铜矿、方铅矿等硫化物杂质的混入，再次精选获得钼精矿品位51．08％，钼回收率84．24％，达GB3200-82特级品标准。

THE ORE SUBSTANCE COMPOSITION AND THE NEW DRESSING TECHNOLOGY OF DONGGOU OVERSIZE MOLYBDENUM DEPOSIT

By demonstrating and evaluating the ore substance composition and new dressing technology of Ruyang Donggou oversize Mo deposit ,Henan province,the componential complexity of deposit substance and the ore dressing performance are expounded,understanding is as follow,1) The host rock 's mostly content is the aluminosilicate.Endure anaphase construct hot liquid influence, the ore breaks, deformation and distortion phenomenon very widespread, as a result the ore has various complex fabric, these factors can produce serious influence to the ore dressing preformance; 2) Give various argument to the ore dressing project , found out the rub and the influence factor of the ore process technique, and gave full consideration in selective process; 3) Float performance experiment, find out the gangue mineral to float up needs time and the relation between the purpose mineral; 4)The roughing experiment, from seven aspects carry through overall experiment,to the purpose mineral ,about the promoter and its dosage ,accession spot,grind sect fineness,molt review, quartz , sodium silicate and its dosage etc, and find out the unite point of the apiece facet to adapt the mineral substance compose and ore dressing performance, give a series of parameter conduct and actions according ; 5) Mo choiceness experiment, separate processed from four aspects, the whet again fineness, depressor category, openning road and floatation closed circuit process etc. making finally production's selective target fulfil the nation standard .Conclusion:Floatation use the condition of 70% -200 eyes, whet again intercalate 83.5% -400 eyes, choose Phosphor-knox and the Sodkum thioglycollate concert, availably restrain the chalcopyrite,galena etc. the sulphide impurity interfuse, again choiceness acquire Mo grade 51.08%, the Mo rate of recovery 84.24%, it reaches GB3200-82 article standard prescribe special class production.