The crushing and screening section of the plant was put into operation in 1958, and the beneficiation part was put into operation in 1960. After the expansion of the plant, the design scale was set at 4 million t/a. With the downward extension of open pits and pits, the original ore has changed significantly. The ore type has mixed ore, ie magnetite, in addition to the original magnetite ore and magnetite-hematite ore. - Siderite - hematite ore, magnetite - siderite ore, siderite - hematite ore, siderite ore. The average content of main elements of the ore in the open pit is shown in the following table: this group include Marble And Granite Cutting Machine and tools, Marble Cutting Machine, marble cutting tools, Granite Cutting Machine, granite cutting tools, granite cutter Marble And Granite Cutting Machine Marble Cutting Machine,Granite Cutting Machine,Glass Cutting Machine,Meat Cutting Machine HARBIN QIAN FAN XI FENG MACHINERY CO.LTD , https://www.waterjetwamit.com
(1) Ore properties: The ore processed in the early stage of the concentrator is divided into seven grades according to the copper , iron , sulfur content and oxidation degree, as shown in the following table: 
Native magnetite structure, dense and fine magnetite particles, between particles are non-metallic minerals filled. The size of the magnetite particles and aggregates is between 0.1 and 0.01 mm, and the size of the chalcopyrite particles and aggregates is between 0.2 and 0.001 mm.
The separation particle size of metal minerals and non-metal minerals in oxidized ore is: imaginary hematite is between 0.7 and 0.01 mm, red copper ore is between 0.2 and 0.001 mm, and quartz is between 0.4 and 0.001 mm. Most metal minerals and non-metallic minerals have a separation particle size of between 0.5 and 0.01 mm.
The magnetite has a Platt hardness of 12 to 16, and the pseudo-hematite has a Platt hardness of 10. The primary ore density is 4.0 t/m 3 and the oxidized ore density is 3.6 t/m 3 .
The composition of primary ore and oxidized ore and minerals is shown in the table below. The table does not include deep mixed ore that has been re-explored since 1976.