After the three-way catalyst calcined by 700 degrees, pulverization, press the catalyst: lead oxide: sodium carbonate: borax: Iron powder: silver (added as silver chloride manner) = 1: 0.3: 1.2: 0.6: 0.4: 0.05 (weight ratio The ratio is placed in a graphite crucible and smelted at 1050 degrees for one hour in a diesel oxygen furnace. 80 diesel heating furnace 50 minutes, one hour and then smelting, fuel consumption of 3.5 kg experience heated, oxygen-fifths of the bottle; smelting 4.5 kg of diesel consumption, oxygen consumption $ 6, when the coke (metallurgical coke) is 60 kg is required. A smelting mixture is about 35 kg. The catalyst is only about 13 kg. After the furnace temperature rises, one pot per hour continues; the fuel consumption is the consumption of the heating section of the furnace plus the smelting consumption. The consumption after the first pot is mainly smelting consumption. The slurry of the refined (completely refining and thinning) is lifted out and the upper layer of the slag is poured out, and the lower layer of lead and precious metal alloy liquid is poured into a crucible heated to 200 degrees, and the crucible is struck at the same time so that the alloy in the liquid follows the specific gravity. Regular precipitation condenses on the bottom to form a precious metal lead buckle, which is cooled down and knocked out the lead buckle. Shabu-shabu is generally used for 5 rotations. The noble metal lead button disposed duplex socket cupellation furnace (5-7 duplex with 600 parts of dry cement and 1 part of magnesium oxide mixing tapped, evenness, centered by a lead button excavated volume hemispherical socket On the top, the stove is placed, the fuel pipe is inserted, and the ignition ash is smelted. When the mirror is formed, it is stopped, cooled, knocked out, and the silver, palladium, platinum, rhodium metal alloy removed is removed into the precious metal and refined. According to the 50 kg precious metal lead buckle, the blowing cost is about 200 yuan. The blown precious metal alloy is melted in a crucible at 1200 °C and slowly poured into rotating water to break the water. The crushed alloy particles are leached with dilute (1 part nitric acid: 3 water) nitric acid, and the leachate (silver nitrate) Liquid), dissolved in the newly added dilute nitric acid without filtration, the filtrate is precipitated with silver chloride, the amount of salt is 1.2 times that of silver, and the silver chloride is returned. The nitric acid consumption is 1.25 times that of silver. The filter residue (non-slag) is a palladium-platinum-ruthenium mixed slag. The non-melting slag is placed in the reactor and dissolved by aqua regia. The amount of aqua regia is 1 kg of slag, which requires 6500 ml of aqua regia. After the reaction to the newly added aqua regia, the solution is filtered and cooled, and the filter residue is 92% niobium powder. after the catch with ethanol nitrate, such as extraction into palladium, platinum extraction raffinate extraction, extraction raffinate zinc powder substitution, replacement rhodium slag is incorporated into the molten aluminum slag activated with 1: 1 hydrochloric acid leaching of aluminum, is highly active residue The crude powder, the crude powder is dissolved in hydrogen peroxide solution, the solution is filtered, and the filtrate is extracted into a crucible for extraction and refining. The filter residue (nearly) was incorporated into the next activation.
As for the sand gold mine containing 20% ​​gold, it is recommended to use lead for the smelting of the selected materials in the mine. The ingredients are the same and the cost is the same. If it is recommended to use aqua regia from industrial secondary materials, the cost is: 0.08 yuan per gram of gold refining costs. Nickel lanthanum enrichment method is not recommended for both sources. The diesel oxygen furnace is 4,000 yuan, the ash blowing furnace is 3,000 yuan, and the liquid discharging pot is 300 yuan. 20L reactor with four-stage absorption (24,000 yuan) series, hand soap with 20% caustic soda solution, 20L four-stage extractor three (platinum, palladium, ruthenium each), each 40,000 yuan, extract oil palladium Special (S201) 300 yuan / kg, with 30 kg (long-term repeated use), platinum special (N235) 100 yuan / kg with 30 kg (long-term repeated use), special (TRPO) 800 yuan / kg with 10 kg (long-term Repeated use), extraction and refining 1 g of palladium cost 0.15 yuan, 1 gram of platinum 0.18 yuan, 1 gram of 铑 0.51 yuan, the equipment refined palladium 900 grams, platinum 850 grams, 铑 2600 grams. The entire extraction was completed in two hours. The above detailed technology will be demonstrated on site during equipment installation.
Silicone Strip Extrusion Line,Sealing Strip Extrusion Machine,Silicone Strip Extruder Machine,Rubber Profile Strip Extruder
Hebei Shuangda Rubber & Plastic Machinery Co., Ltd. , https://www.shuangdarubber.com