CNC Busbar Bending Machine is the computer-controlled equipment dedicated for busbar bending, performing various bending operations through the coordination of X-axis and Y-axis movements, assisted with manual feeding. The selection of different dies can complete the plane bending, side bending and other processes of busbar. The machine can be used in combination with GJ3D software, and is able to accurately calculate the spread length of the bend. As to the frequently bent workpiece, it can automatically find the bending order to achieve programming automation, simulate the bending order to place busbar and avoid errors in determining the bending positions.
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Gold tailings heap leaching and recovery of gold from tailings abroad
1. Gold tailings heap leaching
A small heap leaching test was carried out on the amalgam -flotation tailings in the Andi gold mine in Sanmenxia City. A total of 1640t tailings were piled up. The gold content of the tailings was 4~5g/t. After the heap leaching, the gold content of the final tailings was obtained. 0.7g/t, leaching rate 80.56%, carbon adsorption rate 99.30%, desorption rate 99.30%, total recovery rate 79.44%.
Second, foreign countries recover gold from tailings
South Africa is the world's largest gold producer and the first country to start recovering gold from tailings on a large scale. In South Africa, there are an estimated 3.4 billion tons of gold ore tailings with a gold content of 0.2 to 2 g/t, and an annual output of about 80 million tons of tailings. Currently, 12 of the 19 flotation plants in South Africa are processing tailings. Among them, 6 treatments recycle old tailings, and 6 treat tailings in the production process, from which gold is recovered. South Africa built the world's largest tailings reprocessing project in 1985 (Angl0-American's Ergo tailings treatment plant), which can process 2 million tons of tailings per month.