论文部分内容阅读
砂金样品,尤其是砂钻样品,常会有工具铁屑混入.淘洗后的灰砂如不及时晒干或烘干,而直接装入袋内,因潮湿形成铁的氧化物将附在金的表面.小的铁屑、褐铁矿和电磁性矿物有时还粘在金的颗粒上.当用磁选分离样品时,金便进入电磁性甚至强磁性部分中,从而降低了金的品位.这种现象在南方尤其严重.据湖南某地5000个见金样品的统计,电磁性部分见金1146个,占22.92%;强磁性部分见金853个,占17.06%. 我们对古龙干河砂金矿品位大于0.05g/m~3的174个钻孔共2389个样品的电磁性部分,用1∶1盐酸进行溶解处理.见金的有121个钻孔,占69.54%,品位平均相对误差4.05%.其中-钻孔基本分析金
Gold sands, especially sand samples, are often mixed with tools such as iron filings. If the washed sands are not dried or dried in time, they are loaded directly into the bag. The oxides of iron that form as a result of moisture will be attached to the gold Surfaces. Small pieces of iron, limonite, and electromagnetic minerals sometimes stick to the gold particles. When magnetic separation is used to sample, the gold enters the electromagnetically and even ferromagnetic parts, reducing the gold grade. Species in southern China is particularly serious.According to Hunan a gold see 5000 samples, the electromagnetic part of the see gold 1146, accounting for 22.92%; strong magnetic part see 853 gold, accounting for 17.06% of our dry gulong gold A total of 174 holes with a mineral content of more than 0.05 g / m 3 were electromagnetically fractioned with 2389 samples and dissolved with 1: 1 hydrochloric acid. There were 121 bores of gold, accounting for 69.54%, with an average relative grade error of 4.05 %. Among them - Drilling Basic Analysis Gold