High-efficiency and no-pollution silver ingot casting deoxidizing agent and deoxidizing method and application thereof
A deoxidizer, non-polluting technology, applied in the direction of element selenium/tellurium, can solve the problems of insufficient surface finish, loose internal structure, and lower specific gravity of silver ingots, and achieves inhibition of oxygen dissolution, reduction of reprocessing costs, and low silver content. Effect
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Embodiment 1
[0021] An efficient and pollution-free deoxidizer for casting silver ingots in this embodiment, the deoxidizer is wheat high-gluten flour.
[0022] The grain size of the wheat high-gluten flour described in this example is 90 mesh.
[0023] In the wheat high-gluten flour described in the present embodiment, the gluten quality is 32% on a wet basis, the protein is 12.5% on a dry basis, the ash content is 0.65% on a dry basis, the sand content is 0.01%, and the magnetic metal is 0.002g / kg. It meets the technical requirements of first-class high-gluten wheat flour in the national standard GB / T 8607-88.
[0024] An efficient and pollution-free silver ingot casting deoxidizer deoxidation method in this embodiment includes the following steps: (1) Melting: put 120kg of electric silver powder in a crucible, and then put the crucible in a 100KW intermediate frequency furnace to melt, high-power Rapidly raise the temperature to 1050°C, at this time, the silver powder starts to melt ...
Embodiment 2
[0029] An efficient and pollution-free deoxidizer for casting silver ingots in this embodiment, the deoxidizer is wheat high-gluten flour.
[0030] The grain size of wheat high-gluten flour described in this example is 80 mesh.
[0031] In the wheat high-gluten flour described in this embodiment, the gluten is 38% on a wet basis, the protein is 13.2% on a dry basis, the ash content is 0.50% on a dry basis, the sand content is 0.01%, and the magnetic metal is 0.001g / kg. It meets the technical requirements of first-class high-gluten wheat flour in the national standard GB / T 8607-88.
[0032] An efficient and pollution-free silver ingot casting deoxidizer deoxidation method in this embodiment includes the following steps: (1) Melting: put 120kg of electric silver powder in a crucible, and then put the crucible in a 100KW intermediate frequency furnace to melt, high-power Rapidly raise the temperature to 1050°C, at this time, the silver powder starts to melt into silver liquid. A...
Embodiment 3
[0034] An efficient and pollution-free deoxidizer for casting silver ingots in this embodiment, the deoxidizer is wheat high-gluten flour.
[0035] The grain size of wheat high-gluten flour described in this example is 100 mesh.
[0036] In the wheat high-gluten flour described in the present embodiment, the gluten quality is 37% on a wet basis, the protein is 14.1% on a dry basis, the ash content is 0.60% on a dry basis, the sand content is 0.01%, and the magnetic metal is 0.002g / kg. It meets the technical requirements of first-class high-gluten wheat flour in the national standard GB / T 8607-88.
[0037]An efficient and pollution-free silver ingot casting deoxidizer deoxidation method in this embodiment includes the following steps: (1) Melting: put 120kg of electric silver powder in a crucible, and then put the crucible in a 100KW intermediate frequency furnace to melt, high-power Rapidly raise the temperature to 1050°C, at this time, the silver powder starts to melt into s...
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