BT-528 Cyanide environmental de Goldwater A Product Code: BT-528 Second, the product features: This product is green tea liquid for stripping gold plating layer is a miracle product; odorless, storage, transportation very safe. Non-toxic, no heavy metals, no green compounds, gold recovery of 98%. Not to hurt the substrate, easy to learn. Third, the product indicators: 1. Was tea green liquid, odorless; 2.PH: 13 3. Specific gravity: 1.2 ± 0.05 4, chemicals: BT-528 off the gold cyanide environmental agents, (H2SO4), BT- 529 Immersion Gold agents, four, use: simply plated workpiece into the BT-528 off the gold cyanide soaking agent, you can quickly take off gold, gold off later joined BT-529 Immersion Gold agents can quickly sink Austin out sponge powder, powder sponge will ChenDian filtered out can be directly smelted gold. This product is low cost, no QING compounds, non-toxic, Pension Fund fast, do not hurt the substrate, environmental pollution, simple operation. Specific operational procedures: with groove proportional range BT-528 Gold Stripping Liquid liquid at room temperature using the temperature time based on the thickness of the gold layer 1: gilded gold scrap into 528 off inside, waste can not be above the water! 2: After the withdrawal of gold scrap from inside the fish off Goldwater, cleaning waste 1 or 2 times. 3: Repeated off payment to basically saturated solution, and then the wash water mixed with de-Goldwater. 4: the preparation concentration of about 50% sodium hydroxide solution was slowly added to the mixture off the gold, stirring, measuring PH test paper was adjusted to PH = 7. 5: adding 70% of the heavy gold agent, pay attention to multiple times (at intervals of about half an hour) was added slowly off Goldwater inside, may be appropriate to mix, avoid vigorous boiling. 6: ENIG agent addition was complete, place about six hours, a long time settling more complete! 7: until precipitation was complete, pour the supernatant (supernatant collected will be placed for several days to observe whether residual traces of gold.) Precipitation reserved. 8: To precipitate the remaining 30% was added ENIG agent, heating, kept boiling for 20 minutes. Then heating was stopped, cooled to about room temperature. 9: To the solution was slowly added concentrated H2SO4, the amount of concentrated H2SO4 KS off 5-10% of the precipitation can be observed color gradually becomes deeper. 10: After completion of the reaction, filtration, the precipitate was collected. Adding sufficient precipitate can be implicitly covered concentrated H2SO4, boiled for 30 minutes to remove impurities. Note that this process ventilation, as far as possible in a beaker covered with a watch glass, reducing toxic gas evaporation. 11: After cooling, pour concentrated H2SO4, pay attention to safe operation, rinse with water precipitated 1-2 times. 12: The pellet guns or high temperature muffle furnace burning into ingots. Burning process can sprinkle a little borax impurity. V. Note: After stripping powder recyclable waste, recycling waste powder to do next after recovery. Almighty off Goldwater (xx off the powder not containing blue water you can use a sodium punch, safety and environmental protection of the Green products not containing compounds, animal consumption harmful to the matter, truly stand the test. 2, off gold fast. ordinary ceramic CPU five minutes off clean, without any residue. 3, large capacity off the gold . one kilogram 500 grams of gold can be extracted. 4, refining and low cost of the product prices are low and only slightly higher than the green xx sodium. 5, wide application of the product can be widely used in plating recycling, mining, etc.