Bosite refractory gold concentrate roasting process, new technology and method for gold extraction from high-sulfur primary gold ore

Bosite refractory gold concentrate roasting process, new technology and new method for extracting gold from high-sulfur primary gold ore
Gold mines can be divided into two types: rock gold mines and placer gold mines. Rock gold mines are gold-bearing ores, and placer gold mines. Minerals are found at the bottom of rivers or low-lying areas. They are actually weathered from rocky gold deposits. However, rocky gold deposits are mostly associated with other minerals, such as copper, sulfur, lead, zinc, quartz, etc. The mineral processing method is relatively complicated, and alluvial gold is mostly Single gold particles range from as large as broad beans to as small as fine sand, with different shapes. Compared with rock gold ore, the beneficiation method is much simpler.
The commonly used method for selecting placer gold ore is the gravity separation method. There are many types of equipment used, including gold pans, gold sticky blankets, shakers, jigs, etc. Each equipment used has its own advantages, but the relative In contrast, the jig machine has the highest recovery rate and large processing capacity.
The jig is a gravity separation equipment with a simple structure and easy operation. It sorts minerals according to the difference in specific gravity of different substances. The greater the difference in specific gravity, the more obvious the sorting effect will be. The specific gravity of alluvial gold is about 100%, and the specific gravity of its associated waste rock is usually no more than that. There is a significant difference in specific gravity between the two, so it is a mineral that is very easy to sort. Jigs often used for sorting placer gold mines include series sine wave jigs, series sawtooth wave jigs and C/type trapezoidal jigs.
The gold content of placer gold ore is very low, generally no more than //, and most of them are simple gold particles. That is to say, large pebbles and waste sand do not contain gold, so the first step to select placer gold is screening. Screening of large waste rocks can improve the beneficiation efficiency of placer gold mines, reduce the workload of jig machines, and increase the overall processing capacity of placer gold mines.
After screening, the gravity separation process begins. Generally, for low-grade placer gold, a large gold separation chute is used for preliminary gravity separation. The large gold separation chute has a large processing capacity and low mineral processing cost, and is suitable for processing low-grade gold. placer gold mine. However, the recovery rate of the placer gold chute is low, and the tailings of the placer gold chute must be swept to improve the recovery rate of the process. Therefore, a jig must be installed at the tailings end of the placer gold chute to recover the gold particles lost in the chute. The heavy sand produced by the chute and jig is a coarse concentrate. If you want to extract gold, the coarse concentrate must be further purified. The purification method includes mercury amalgamation or gravity separation, and either a mercury amalgamation cylinder or a shaking table can be used. .
The main products of the complete set of equipment produced by Henan Bosite Machinery Manufacturing Co., Ltd. are: jaw crusher, hammer crusher, roller crusher, impact crusher, vertical crusher, high-efficiency and energy-saving cone bearings Ball mill, vibrating screen, automatic anti-sand spiral polarizer, high-efficiency energy-saving flotation machine, mining mixing tank, feeder, thickener, mining elevator, mining conveyor, pre-added water ball tray, spiral chute, Ore dressing shaker, ore washing machine and other equipment.