localearner
New member
Hello, I wanted to ask whether I can use the following tutorial that I wrote to process a 1.6kg mixed Ceramic CPU batch.
Please tell me if I should change anything.
Tutorial:
Processing Lids:
Add one to one ratio of nitric acid (67%) to distilled water to all the CPU collected in a 250ml Beaker, 60ml to 60ml. Leave for 24-48 hours or until all gold foil comes off the lids. Stir occasionally.
After the hours pass, add water, filter the mixture out, add baking soda, and put it in a bucket. Filter the solids to place them to another beaker, use water bottle to remove all solids from filter. The cloth must be dense enough to filter all the organic dirty things.
In a 1l beaker, add 200ml hydrochloric acid (35%), 50ml nitric acid (67%) and leave the mixture for 3 hours. Add water to stop fuming. Filter the solids out to keep them out, spray with water bottle to remove all liquid from solids. Put liquid in a beaker, and add enough Urea-water so the mixture stops bubbling. Do NOT overadd Urea! Take 10g Sodium Metabisulfite, mix it with water, and add it to the Urea containing gold mixture. Leave for 16-24 hours.
Collect the gold, boil the gold sediment with concentrated hcl acid (35%), then in water, then wash all sediments 4-5 times with water. Add borax when melting.
Boil ready gold in diluted sulfuric acid (30%).
Wash with water.
Processing Ceramics
Add one to one ratio of nitric acid (67%) to distilled water to all the CPU collected in a 2l Beaker. Leave for 24-48 hours or until all gold separates from ceramics.
Filter the solution to a separate beaker, while using a magnetic stirrer, add 20ml hydrochloric acid (35%) to the filtered solution and leave it aside for the silver to precipitate.
After the hours pass, add water, filter the mixture out, add baking soda, and put it in a bucket. Filter the solids to place them to another beaker, use water bottle to remove all solids from filter. The cloth must be dense enough to filter all the organic dirty things. Add 400ml hydrochloric acid (35%), 80ml nitric acid (67%) and leave the mixture for 5 hours. Add water to stop fuming, filter the solids out to keep them out, spray with water bottle to remove all liquid from solids. Add enough Urea-water so the mixture stops bubbling. Do NOT overadd Urea! Take 30g Sodium Metabisulfite, mix it with water, and add it to the Urea containing gold mixture. Leave for 16h-24 hours.
Filter the silver out to another beaker and wash it multiple times, add water to the beaker and boil it until it bubbles then wait 5 minutes. Remove the excess water. Add sodium carbonate mixed with water and water to the beaker and boil it again for 1 hour. On low heat, add sugar and water then boil again. Wash it with water, and boil with water. Place in new water and leave for 1 day.
Collect the gold and the silver, boil the gold sediment with concentrated hcl acid (35%), then in distilled water, wash all sediments 4-5 times. Add borax when melting.
Boil ready gold in diluted sulfuric acid (30%).
Wash with water.
Please tell me if I should change anything.
Tutorial:
Processing Lids:
Add one to one ratio of nitric acid (67%) to distilled water to all the CPU collected in a 250ml Beaker, 60ml to 60ml. Leave for 24-48 hours or until all gold foil comes off the lids. Stir occasionally.
After the hours pass, add water, filter the mixture out, add baking soda, and put it in a bucket. Filter the solids to place them to another beaker, use water bottle to remove all solids from filter. The cloth must be dense enough to filter all the organic dirty things.
In a 1l beaker, add 200ml hydrochloric acid (35%), 50ml nitric acid (67%) and leave the mixture for 3 hours. Add water to stop fuming. Filter the solids out to keep them out, spray with water bottle to remove all liquid from solids. Put liquid in a beaker, and add enough Urea-water so the mixture stops bubbling. Do NOT overadd Urea! Take 10g Sodium Metabisulfite, mix it with water, and add it to the Urea containing gold mixture. Leave for 16-24 hours.
Collect the gold, boil the gold sediment with concentrated hcl acid (35%), then in water, then wash all sediments 4-5 times with water. Add borax when melting.
Boil ready gold in diluted sulfuric acid (30%).
Wash with water.
Processing Ceramics
Add one to one ratio of nitric acid (67%) to distilled water to all the CPU collected in a 2l Beaker. Leave for 24-48 hours or until all gold separates from ceramics.
Filter the solution to a separate beaker, while using a magnetic stirrer, add 20ml hydrochloric acid (35%) to the filtered solution and leave it aside for the silver to precipitate.
After the hours pass, add water, filter the mixture out, add baking soda, and put it in a bucket. Filter the solids to place them to another beaker, use water bottle to remove all solids from filter. The cloth must be dense enough to filter all the organic dirty things. Add 400ml hydrochloric acid (35%), 80ml nitric acid (67%) and leave the mixture for 5 hours. Add water to stop fuming, filter the solids out to keep them out, spray with water bottle to remove all liquid from solids. Add enough Urea-water so the mixture stops bubbling. Do NOT overadd Urea! Take 30g Sodium Metabisulfite, mix it with water, and add it to the Urea containing gold mixture. Leave for 16h-24 hours.
Filter the silver out to another beaker and wash it multiple times, add water to the beaker and boil it until it bubbles then wait 5 minutes. Remove the excess water. Add sodium carbonate mixed with water and water to the beaker and boil it again for 1 hour. On low heat, add sugar and water then boil again. Wash it with water, and boil with water. Place in new water and leave for 1 day.
Collect the gold and the silver, boil the gold sediment with concentrated hcl acid (35%), then in distilled water, wash all sediments 4-5 times. Add borax when melting.
Boil ready gold in diluted sulfuric acid (30%).
Wash with water.
