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钨矿重选厂在碎矿、磨矿和矿浆输送过程中,产生了一定量的金属铁屑混入矿石里,这部份金属铁屑通过重选后又富集于钨毛砂产品之中。 由于毛砂中金属铁屑的存在,加之毛砂的脱硫作业——抬浮和浮选多是在酸性介质中进行的,因而在送入磁选前的脱水干燥过程中,因金属铁屑的锈蚀氧化,使毛砂中的非磁性矿物(锡、铜、铋、白钨、石英等)表面形成一层氧化铁膜,不同程度地改变了
Tungsten ore re-election plant in the crushing ore, grinding ore and pulp transport process, resulting in a certain amount of metal scrap iron mixed into the ore, this part of the metal scrap after re-election and enrichment in the tungsten sand products. Due to the presence of metal iron filings in the sand, together with the desulfurization operation of the sand - lifting and flotation are mostly carried out in an acidic medium, so in dehydration drying process before sending into the magnetic separation, Corrosion and oxidation, the sand in the non-magnetic minerals (tin, copper, bismuth, scheelite, quartz, etc.) to form a layer of iron oxide film surface, varying degrees of change