Method for preparing anode plate from gold anode mud
A technology of anode slime and anode plate, which is applied in the direction of electrodes, photographic technology, instruments, etc., and can solve the problems that the anode plate is difficult to form, gold and silver are easy to be lost, etc.
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Embodiment 1
[0033] Step 201, prepare 20L ammonia solution containing 10% ammonia, add 5Kg anode slime to the ammonia solution and keep stirring for 4 hours, so that AgCl in the anode slime is fully dissolved. Filter under the fume hood, wash and dry the filtered gold powder to obtain coarse gold powder;
[0034] Step 202, weighing 4Kg of coarse gold powder and putting it into a ball milling jar, adding 2.5wt.% solid paraffin in the ball milling jar as a molding agent. The diameters of the ceramic balls used for ball milling are 5mm, 8mm and 10mm respectively, and the ratio of the ceramic balls to the coarse gold powder is 3:1. Finally ball mill jar is symmetrically installed on planetary ball mill and carries out ball mill, and ball mill speed is 200 rev / mins, and ball mill time is to obtain fine gold powder after 8h;
[0035] Step 203, put the ball-milled fine gold powder in a drying oven for drying, the temperature of the drying oven is set at 80°C, and the drying time is 4 hours. Aft...
Embodiment 2
[0040] Step 301, preparing 8L of ammonia solution containing 10% ammonia, adding 2Kg of anode slime to the ammonia solution and stirring for 4 hours, so that AgCl in the anode slime is fully dissolved. Filter under fume hood, wash and dry the filtered gold powder to obtain coarse gold powder;
[0041] Step 302, weigh 1.6Kg of gold powder and put it into a ball mill jar, and add 2.5wt.% solid paraffin in the ball mill jar as a molding agent. The diameter of the ceramic ball that ball mill is used is respectively 5mm, 8mm and 10mm, and the ratio of ceramic ball and coarse gold powder is 3:1. Finally, the ball mill jar is symmetrically installed on the planetary ball mill for ball milling, the ball milling speed is 200 rpm, and the ball milling time is 8h to obtain fine gold powder;
[0042] Step 303, put the ball-milled fine gold powder in a drying oven for drying, the temperature of the drying oven is set to 80°C, and the drying time is 4 hours. After cooling with the furnace...
Embodiment 3
[0047] Step 401, prepare 10L ammonia solution containing 10% ammonia, add 2.5Kg anode slime to the ammonia solution and stir for 4 hours, so that AgCl in the anode slime is fully dissolved. Filter under fume hood, wash and dry the filtered gold powder to obtain coarse gold powder;
[0048] Step 402, weighing 2Kg gold powder and putting it into a ball mill jar, adding 2.5wt.% solid paraffin in the ball mill jar as a forming agent. The diameter of the ceramic ball that ball mill is used is respectively 5mm, 8mm and 10mm, and the ratio of ceramic ball and coarse gold powder is 3:1. Finally, the ball mill jar is symmetrically installed on the planetary ball mill for ball milling, the ball milling speed is 200 rpm, and the ball milling time is 8h to obtain fine gold powder;
[0049] Step 403, put the ball-milled fine gold powder in a drying oven for drying, the temperature of the drying oven is set to 80°C, and the drying time is 4 hours. After cooling with the furnace, the dried...
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