There are various mechanisms for the destruction or loss of cyanide in the heap. These mechanisms include: bacteria, that is, the action of microorganisms; the action of air; the action of sunlight; and the action of the pile.
(1) Microbial action Cyanide contains two basic life elements, carbon and nitrogen. These elements in cyanide are bonded by a high-energy, carbon-nitrogen bond, so cyanide is an ideal food for microorganisms. When cyanide is combined with oxygen, soda ash and trace amounts of phosphorus , the microorganisms can grow vigorously, and the cyanide destruction by the microorganisms is complete. Cyanide is oxidized to form CO 2 or hydrocarbons, while nitrogen is converted to nitrogen or protein. The biological treatment process can also remove thiocyanate, a free and metal complexed cyanide, metals and ammonia. Biodegradable products include sulfur, nitrogen and carbon. (2) Air action Oxygen in the air is an effective oxidant for cyanide. This oxidation process must have a catalyst. Many compounds are effective catalysts, and sulfur oxide or sulfite ions have recently been used as catalysts. Materials have some activity, such as activated carbon, iron oxide, manganese oxide, clay (clay), zeolites, and active silica, it can also act as a catalyst. Some of the above compounds may be present in the heap leach or heap material. Cyanide reacts with air as 4NaCN + 50 2 + 2H 2 O - 2N 2 + 4CO 2 + 4NaOH (3) Sunlight effect Sunlight also acts to catalyze the reaction of oxygen and cyanide, which is especially effective. When cyanide on the surface of the heap or cyanide is sprayed into the air, it can be oxidized with cyanide under exposure to ultraviolet radiation.The Agriculture Parts which we made including link-pins, casting housings, shaft forks, impellers, flywheels.
These parts mostly applied in excavators, trucks, lawn mowers, or railway equipments.
Most of our customers were from North America, Europe and Chinese domestic market.
Materials: steel tube, stainless steel, grey iron, ductile iron, steel casting, lost wax casting, zinc alloy, Aluminum alloy, etc.
Surface treatment: painting, zinc plating, blackening, passivation, oiled, etc.
Heat treatment: according to customer`s requirement.
We have specialized in producing high precision agriculture parts more than 10years, Because of the long term cooperation, we could supply our customers not only the products but also our recommendation on the designs to saving costs.
Agriculture Parts
Agriculture Parts,Agricultural Machinery Spare Parts,Agricultural Bending Parts,Agricultural Tractor Parts
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