A process for extracting precious metals by silver capture of high-alumina petroleum catalysts
A technology for catalysts and precious metals, which is applied in the field of high-alumina petroleum catalyst silver capture and extraction of precious metals. It can solve the problems of low wet reprocessing yield, high loss of precious metals, and high viscosity of slagging, so as to improve the processing scale and recovery rate of precious metals. , Reduce the difficulty of fire treatment, reduce the effect of melting temperature
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Embodiment 1
[0032]The petroleum catalyst containing the noble metal was dried, and the aqueous water was 2.7%, according to the above catalyst and pretreatable copper-yarns mixed according to the mass ratio of 1: 8, if the aluminum content in the catalyst is fluctuating, the alumina content in the mixture is not More than 6%, then add 4% of silica, 5% of the reducing coal, 6% sodium carbonate, at a temperature of 1250 ° C, 0.5 h, and then stand for 1H, after the slash. After the slag, the theoretical amount of silica removal lead was calculated according to the lead in the lead in the lead in the lead, and the reaction was melted at 1250 ° C for 2 h, and the lead slag was allowed to stand after 0.5h; Yan calculates the addition of the theoretical amount of sodium carbonate, and the reaction is 2 h at 1250 ° C, and the swing of the ruthenium is depressed after 0.5 h; then calculate the amount of potassium nitrate and silica according to the copper content of silicate. Copper, melting at 1250 °...
Embodiment 2
[0040] The petroleum catalyst containing the noble metal was dried, and the water was divided into 2%, according to the above catalyst and pretreatable copper, according to the mass ratio of 1:10, if the aluminum content in the catalyst is fluctuating, the alumina content in the mixed material is not More than 6%, then add 6% of silica, 7% of the reducing coal, 8% sodium carbonate, at a temperature of 1250 ° C, stirred by a smelting of 1 h, and stand for 2 hours after smelt slag. After the slag, the theoretical amount of silica was added to the lead in the lead in the lead in the lead, and the reaction was melted at 1300 ° C for 3 h, and the lead slag was blown back after 1 h; then adding the straw in the formation of sodium ruthenium Calculate the addition of the theoretical amount of sodium carbonate, 1300 ° C molten the reaction for 3 h, and then allowed 1H and then blown swing; then according to the copper content of silicate, the amount of potassium nitrate and silica needed ...
Embodiment 3
[0048] The petroleum catalyst containing the noble metal was dried, and the moisture content was 2.5%, according to the above catalyst and the preproced copper, the moisture was mixed according to the mass ratio of 1: 8. If the aluminum content in the catalyst has fluctuations, the alumina content in the mixed material is controlled. No more than 6%, then add 5% of silica, 7% of the reducing cuvet, 7% sodium carbonate, 0.9 h at a temperature of 1250 ° C, smelting reduction, and standing for 2 hours after smelt slag. After the slag, the theoretical amount of silica removal was carried out in accordance with the lead in the lead in the lead in the lead in the lead, and the reaction was stirred at 1250 ° C for 2.5 h, and then the lead slag was pulled by 0.9 hours; and then the addition of sodium anthracycranium The bismuth calculation is calculated to add the theoretical amount of sodium carbonate, and the reaction is 2.5 h at 1250 ° C, and then the straw is pulled by the swing of 0....
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