I. Industrial types and characteristics of gold deposits Gold is widely distributed of sand deposits, a wide range, according to their distance conveyance distance can generally be divided into five categories: residual, slope deposits, alluvial, river and shore impact placer deposits, alluvial bed which is more common. According to the nature of the moving force, it can be divided into aeolian sand gold deposit, ice sand gold deposit and water sand gold deposit. According to the era of its handling, it is divided into deep sand gold deposits, terrace gold deposits and river sand gold deposits. The thickness of a gold deposit is generally 50 to 300 meters or more, and the length can be several kilometers or even tens of kilometers. The buried depth is generally 1 to 5 meters, and is as deep as 20 to 30 meters or deeper. The gold deposit thickness of the deposit is generally 1 to 5 meters, and individual can reach 10 meters. Gold is mostly in the form of granules, flakes, branches and leaves in gold deposits. The particle size of gold is generally 0.5 to 2 mm, but there are also large pieces of gold weighing up to several kilograms and powdered gold. The color of gold is usually 50% to 90%, and the specific gravity is 17.6 to 18. Second, gold ore beneficiation process The principle of beneficiation of gold deposits is to use the re-election method to recover gold and associated heavy minerals from the original ore. The re-election, flotation, amalgamation , magnetic separation and electrostatic separation are combined. And various heavy minerals are separated from each other for the purpose of comprehensive recovery. The gold ore mining is generally divided into processes such as disintegration and screening, deliming and sorting. Third, the selection of gold deposits Practice has proved that the re-election method is the most effective and economical method for treating gold deposits. Because of the different grain size composition of gold in the gold mine, the effective grain size limits of various re-election equipments are different, so reasonable sand gold ore The selection process should be a joint operation of several reselection devices. The gold-bearing concentrate obtained from the rough selection section has a gold grade of 100 g/t. Heavy sand minerals are hidden at 1 to 2 kg/ton. There are currently three methods for the treatment of gold-bearing concentrates: 1. Wash out the gold particles with an artificial gold pan and discard them with heavy sand; 2. The internal mixing of mercury is carried out by mixing the cylinders, and the mercury paste is obtained and discarded by heavy sand; 3. After the gold is extracted by manual panning or amalgamation, the heavy sand is sent to the selected plant for treatment, and various heavy sand minerals are separately recovered by magnetic separation and electric selection. The recovery rate of gold deposits in the gold deposit: the two-stage chute is 70%~74%, the chute is coarsely selected, the jig is selected, and the shaker selection process is 85%~90%.
Jining Union Machinery And Parts Co., Ltd. Is famous for Excavator Swing Reduction. We can supply many brand and many models Excavator swing reduction.
Our company mainly produces a full range of excavators gear accessories,indulding excavator travel reduction assy, swing reduction assy (swing device), swing gears, swing gear ring, RV Gears, swing shaft (shaft pinion), crankshafts, pin, swing reduction carriers, swing reduction carrier assembly, travel hub (drum), swing motor cases, Swing Bearing and bearings, swing reducer housings, covers, etc.. Involves the brand including KO-MATSU, CA-T, HI-TACHI, SUMITOMO, KATO, DAEWOO, HYUNDAI, KOBELCO, VOLVO,JCB and other Chinese brands of excavators.
The model for excavator swing reduction is as follow,
Brand
Model
Hi-tachi
EX60,EX100,EX120, EX200, EX220, EX230,EX270,EX300,EX330,EX350,EX400,ZAIX200,ZAIX230,ZAIX210,ZAIX240,ZAIX250,ZAIX270,ZAIX330
Koma-tsu
PC30,PC35,PC40,PC50,PC60,PW60,PW100,PC100,PC120,PC150, PC200,PC210, PC220,PC228, PC240, PC300, PC350,PC360, PC400, PC410,PC450,PC600
Kobelco
SK07,SK12,SK60,SK75UR,SK100,SK115, SK120, SK200,SK210, SK220,SK230,SK258,SK300, SK330,SK350, SK450
KATO
HD250, HD400, HD450,HD550, HD700, HD770, HD800,HD820,HD880,HD900,HD1023,HD1250,HD1430,HD1880
Daewoo
DH55,DH150,DH200,DH220,DH25,DH258-7,DH290,DH300,DH330,DH360,DH370,DH500
Hyundai
R55,R60,R110,R130,R150,R200.R210,R215,R220,R225,R260,R280,R305
Sumitomo
SH100,SH120,SH200,SH300,SH350,SH450,
LS260,LS265,LS280,LS580 travel motors
CART
E70,E110,E120,E200,E240,E300,E307,E308,E312,E320,E322,E325,E330
VOLVO
EC55,EC210,EC240,EC290,EC360,EC450,EC460
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