For a long time, gold extraction and recycling - directly attracted people's interest. Today, the process is quite complex and tends to be more economical and process-lower in the processing of ore grades. Currently, the generally accepted process for processing gold ore is cyanidation. Howeve

Large metal ores are considered low-grade ore, particularly a lower precious metal ores, non-ferrous metals grade, produced more than 90% of solid waste such metal ores in the mining, mineral processing, metallurgical processing and production process. In particular, the beneficiation tailings are

The pyrite cinder (dry mine) is sieved through a 100 mesh sieve, and the sieved product is ground in a rod mill for 5 min, the grinding concentration is C=70%, stirred for 5-8 minutes, and then re-elected by a spiral chute. The obtained tailings were further shaken to obtain the middle and tailings

At present, China has more than 200 kinds of gold mining vessels, with an annual excavation volume of more than 70 million cubic meters. The annual bank tailings of the onshore selection plant matched with gold mining vessels amounted to 252,000 tons. These magnetic iron ore tailings contained, hem

(1) income statement (see table below) This table is the first table in the financial evaluation of the project is the basis for other financial statements, the contents of the table indicate the production year by year during the period of product sales revenue, sales tax gold, total cost, profit

1. Titanium alkoxide gas phase pyrolysis The process uses titanium alkoxide as a raw material, heats and vaporizes it, uses nitrogen gas, helium gas or oxygen as a carrier gas, and preheats the titanium alkoxide vapor into a decomposition furnace to carry out thermal decomposition reaction. Its re

Nickel oxide is a green powder. When it is overheated, it is a powder with a specific gravity of 6.6 to 6.8 and a melting point of 1990 °C. Do not dissolve in water and liquid ammonia. Soluble in sulfuric acid, nitric acid, hydrochloric acid and ammonia. It is oxidized to nickel oxynitride in ai

1. Under the direct leadership of the squad leader, complete the magnetic separation post operation according to the operation rules, technical cards and various rules and regulations of this post. 2. Familiar with the contact between the post and the upper and lower operations to ensure smooth se

A, mercury-containing waste water Pollution In the production of gold, still using the job of gold amalgamation process. In the production process, a lot of mercury is lost to the wastewater. Mercury plate effluent, flotation tail water, thickener overflow water, gold concentrate section drainage,

(1) Combustion reaction and its thermodynamic analysis The fixed carbon content of the fuel for sintering is generally 68-80%, and it can be burned when the temperature rises above 700 °C. When sintering is ignited, the ignition temperature should be between 1100 and 1200 ° C because the surf

Gold ore mineral composition is varied, in addition to inert, non-functioning cyanide mineral (quartz, silicates, iron oxide), the oxygen can often present with cyanide and reacting the starting solution. They carry out side reactions, increase the consumption of reactants, and reduce the rate of l

For some of the pyrite-type arsenic pyrite gold ore leaching difficult, in addition to the firing process flue gas SO 2 is generated, there are dust, arsenic, mercury, cadmium, lead and other harmful elements, so the addition of SO 2 while, These harmful elements should be treated. 1. Treatment an