The heap immersion site is located in central Nevada. The heap leaching material is a tailings produced by a cyanide plant at the beginning of this century. The original tailings contain high sulphide and low gold recovery. After 70 years of weathering, the sulphide is oxidized and the tailings pH is 1.7. The particle size is 65%-200 mesh, the gold grade is 0.8-2.7 g/t, and the stirring leaching rate is 83%.
The granulation heap leaching procedure is: the tailings are transported into a Φ2.6×6.8m drum granulator for granulation, the drum rotation speed is l0.5r/min, and the binder is cement 5kg/t mine. Lime 5kg/t ore, both are added by a spray system, and water is sprayed through the spray pipe installed in the drum as a flat droplet, and the final water content of the pellet is 14%. The prepared pellets were piled on a 2.0 mm thick PVC underlay layer with a curved piler, and the stack height was 5 m. After solidification, 1 g/L of sodium cyanide solution was used, and 7.32 L/( The spray intensity of h·m 2 ) is sprayed on the heap, and the gold in the leachate is adsorbed, analyzed and electrolyzed by carbon. The recovery rate of gold is 76%, the consumption of sodium cyanide is 0.3kg/t ore, and the leaching and washing period is 24d.
After using our car for a long time, the interior will become dirty, with oil stains, stains, and other things that need to be cleaned.
Car washing refers to the cleaning of car appearance, which is a problem that every car owner or driver often faces. In recent years, car washing shops have gradually become a hot investment project in many large and medium-sized cities.
The steps and operation methods of car cleaning are important precautions for car cleaning. A good car cleaning can have a good maintenance effect on the car.
Car cleaning is the process of removing dirt, dust, grime, and other contaminants from a vehicle's exterior and interior surfaces. This includes washing the exterior, cleaning the wheels and tires, vacuuming the interior, wiping down the dashboard and other surfaces, and cleaning the windows. Car cleaning can be done by hand or with the use of specialized equipment and products, such as pressure washers, steam cleaners, and detailing brushes. Regular car cleaning helps to maintain the appearance of the vehicle, protect the paint and other surfaces, and prevent corrosion and other damage.
Car Cleaning,Car Cleaning Wax,Multi Purpose Car Cleaner,Car Interior Cleaner Foam
Jiangyin yinghuameng Houseware Co.,Ltd. , https://www.yhmcarcare.com