According to the characteristics of process mineralogy, there are three main types of refractory gold ore resources in China, which can be divided into main types.

第一种为高砷、碳、硫类型金矿石，在此类型中，含砷3%以上，含碳1-2%，含硫5-6%，用常规氰化提金工艺，金浸出率一般为20-50%，且需消耗大量的Na2CN，采用浮选工艺富集时，虽能获得较高的金精矿品位，但精矿中含砷、碳、锑等有害元素含量高，而给下一步提金工艺带来影响。

The first high arsenic, carbon and sulfur type gold ore, in which, containing more than 3% of the arsenic, carbon 1-2%, sulfur 5-6%, with conventional cyanide leaching process, gold leaching rate is 20-50% and consume a lot of Na2CN. With the flotation process of enrichment, although can obtain higher gold concentrate grade, but concentrate containing high content of arsenic and carbon, antimony and other harmful elements, and to the next step leaching process impact.

第二种为金以微细粒和显微形态包裹于脉石矿物及有害杂质中的含矿石，在此类型中，金属硫化物含量少，约为1-2%，嵌布于脉石矿物晶体中的微细粒金占到20-30%，采用常规氰化提金，或浮选法浮集，金回收率均很低。

The second kind of gold in micro fine grained and micro form of the package to gangue mineral and harmful impurities in the ore bearing. In this type, metal sulfide content of less, is about 1-2% and disseminated in gangue mineral crystals in the fine particle Gold 20 to 30 percent, the conventional cyanide leaching, or flotation flotation, the gold recovery rate was very low.

第三种为金与砷、硫嵌布关系密切的金矿石，其特点是砷与硫为金的主要载体矿物，砷含量为中等，此种类型矿石采用单一氰化提金工艺金浸出提标较低，若应用浮选法富集，金也可以获得较高的回收率指标，但因含砷超标难以出售。

The third for gold and arsenic, sulfur block cloth is closely related to the gold ore, its characteristics is of arsenic and sulfur as the main carrier minerals of gold and arsenic content medium, this type ores using single cyaniding leaching of gold standard low, if the application of flotation enrichment, Jin can also get higher recovery rate index, but because it contains arsenic exceeding difficult to sell.