in this study the elimination of cyanide by the addition of hydrogen peroxide and calcium hypochlorite was investigated. this study was conducted to determine the optimum conditions of h 2 o 2 and ca(ocl) 2 : concentration ph and contact time and the combined ratio of concentration h 2 o 2 with ca(ocl) <sub>2</sub> to remove cyanide in gold mining wastewater.
there was a product marketed in the late 1800's called dupont mining salts that was used by miners to leach gold from ores. very little is known about it as it has not been made in 100 years but it is felt that it was powdered calcium hypochlorite and that it would make calcium hypochlorite bleach when dissolved in water.
chloride–hypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 fig. 1. the pourbaix diagram of fe–s at [fe] –= 10 4 m [s] = 10– m and 25 c (the chlorine species regions are also marked) (marsden and house 2005) fig. 2.
however the reagent requirement may be further reduced by replacing sodium hypochlorite with calcium hypochlorite. in a leach solution containing 10 kg/t ca(ocl)2 or 5 kg/t available chlorine 3 % hcl and 2 kg/t nacl 95 % of the gold was extracted in 90 minutes oxidation at 210°c. silver extraction was 98 % under the same conditions.
45% calcium hypochlorite for mining find complete details about 45% calcium hypochlorite for miningsuper chlor calcium hypochloritecalcium hypochlorite or bleaching powderchlorinated lime calcium hypochlorite from chlorate supplier or manufacturer-tianjin kaifeng chemical co. ltd.
hypochlorite leaching of gold ore 69 overall reaction of equations (i) (2) and (3) can be summarized as follows: it is obvious that both hydrochloric acid and sodium chloride have affected the gold dissolution in hypochlorite solution. results and discussion gold precipitate the dissolution of gold in dilute hypochlorite solution is very slow.
a wide variety of calcium hypochlorite for mining options are available to you such as food grade industrial grade and agriculture grade. there are 58 calcium hypochlorite for mining suppliers mainly located in asia. the top supplying country or region is china which supply 100% of calcium hypochlorite for mining respectively.