(A) Overview of green copper mine located in Changle County mountain province Changwei region. Dehydration: Two sections of dewatering are carried out by concentration and filtration, and the concentrate water is 12%.
Steel Sheet Pile, according to the different processing technology can be divided into: hot rolling / tensile steel Sheet Pile, cold bending steel sheet pile. Now because of the production conditions and the scale of the restrictions, the hot rolled steel sheet pile in the domestic no production line, the hot rolled steel sheet pile in our country are from abroad. Common hot rolled steel sheet piles manufacturer Hyundai Steel, Nippon Steel Mills, Japan's Sumitomo steel, Japan's JFE steel, and Europe and the United States parts manufacturers.
Photo of our Sheet Pile:
structure
Steel sheet pile cofferdam is a most commonly used sheet pile cofferdam. Steel sheet pile is with a lock of a type steel, the cross section is straight shaped, trough and Z, with various sizes and interlocking form. There is a common type of Larson, Lackawanna type etc..
The utility model has the advantages: high strength, easy to break into the hard soil layer; construction in deep water, when necessary and inclined support to become an inclosure. The waterproof performance is good, and can be composed of various shapes of cofferdam, and can be used for many times, so it is widely used.
In the construction of bridge used in open caisson cofferdam, it is widely. Tubular column foundation, pile foundation and the foundation of the cofferdam, etc..
The use of single wall enclosed cofferdam, cofferdam in the vertical and horizontal support, if necessary with the inclined support into a cage. Such as China Nanjing Yangtze River Bridge Foundation, had used steel sheet pile round cofferdam, the diameter of 21.9 meters, 36 meters long steel sheet pile, there are various sizes and interlocking form. To reach the bottom of underwater concrete strength requirements, pile cap and pier construction pumping, pumping design depth of 20 meters.
In the construction of hydraulic structures, the general construction area is very large, it is commonly used to make the construction of the cofferdam. It is a single connected to each other by many, each monomer is composed of many steel sheet pile, single middle filled with soil. The scope of the cofferdam retaining can be too large to be used to support the weir wall, so each monomer can alone to resist overturning and sliding and prevent the crack in the interlocking. Commonly used in the form of circular and next door.
1, steel sheet pile
2, on both sides of the joint structure
3, in the ground, the water constitutes a wall
classification
Sheet Pile Steel or Sheet Piling.
Steel sheet pile is a kind of edge with linkage device, and the linkage device can be freely combined in order to form a continuous steel structure.
temperature
Cold formed steel plate
The steel strip is continuously formed with Z shape, U shape or other shapes, and can be connected with each other through a building foundation which is connected with each other through a locking plate.
Civil engineering application of cold-formed steel's main products a with rolling and cold bending molding process for producing steel plate pile, the steel sheet pile piling machine (pressure) into the ground to make it connected to steel sheet pile wall for retaining soil or water. Commonly used cross section types are: U shape, Z shape and straight abdominal plate. Steel sheet pile suitable for soft foundation and underground water level is higher than that of the deep foundation pit supporting, construction is simple, the utility model has the advantages of is good sealing performance can be reused. Delivery status of steel sheet pile delivery length of 6m, 9m, 12M, 15m, can also be based on user requirements, the length of the processing, the maximum length of 24m. (if the user has special length requirements, can be in order to put forward) cold formed steel sheet pile to the actual weight of delivery, also can according to the theory of weight delivery. Steel sheet pile application of cold-formed steel sheet pile products in the application of civil engineering with construction convenient, quick progress, without the need for large construction equipment, is conducive to the characteristics of the seismic design and according to the specific conditions of the project, change the cold-formed steel sheet pile section shape and length, makes the structure design more economical and reasonable. In addition, through the optimization design of the section of the cold formed steel sheet pile, the quality coefficient of the product can be improved obviously, and the weight of the width of the pile wall is reduced, and the cost of the engineering cost is reduced.
Characteristic
1, deal with and solve a series of problems in the process of mining;
2, construction is simple, shorten the time limit for a project.
3, for the construction tasks, can reduce the requirements of space;
4, the use of steel sheet pile can provide the necessary security and (disaster relief and rescue) strong timeliness;
5, the use of steel sheet pile can be free from the constraints of the weather conditions;
6, in the process of using steel sheet pile, can simplify the examination of the material or system performance of complex procedures;
7, to ensure its adaptability, good compatibility, and can be repeated use.
8, can be recycled, save money.
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The mine was built in the Great Leap Forward in 1958. Due to the interference and destruction of Liu Shaoqi's counter-revolutionary revisionist Lu Hong, it was cut off. Under the guidance of Mao's revolutionary route, the Qingshang Copper Mine was built 200 tons/day in 1971. Selection and selection of enterprises.
The mine is developed for the inclined shaft, and the mining method is shallow hole mining method. Wellhead close to the beneficiation plant, ore from the ore Lifting directly to the warehouse.
The water was taken from the Xihe River, 1.3 km from the concentrator, and the concentrator built a 50 m3 water tower.
The mine power supply comes from Weifang Power Plant, and is introduced into the mine's total step-down substation through a 31-kilometer 35-kilovolt line (transformer capacity is 1800 kVA), and it is also converted to a transformer substation (transformer capacity of 560 kVA). The volts dropped to 380 volts and distributed to the concentrator.
The dressing factory maintenance system is a minor repair every month, a mid-term repair, and a year-end overhaul. Spare Parts are mainly from Zibo Mining Machinery Factory and Commune Machine Repair Factory.
(II) Process 1. Raw ore properties
The mine is a copper-bearing skarn type deposit. The type of ore is a hydrothermal metasomatic type secondary copper sulfide ore. Metallic minerals bornite, followed by the chalcocite, chalcopyrite, pyrite. Gangue minerals potassium feldspar, quartz, hornblende. The ore is simple in nature and has a low oxidation rate. Therefore, in the case of a low grade of ore, a simple sorting process can still obtain better sorting indicators.
2. Process Flow Breaking: Three sections of closed circuit, the original ore size is 350~0 mm, the final crushed product has a particle size of 18~0 mm, and the crushing ratio is 19.
Grinding: a closed-circuit grinding, grinding fineness - 200 mesh accounted for 60%, Overflow concentration 30%.
Flotation: use one rough selection, one selection, and the second sweeping process to select copper. The process flow is shown in the figure below. 
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(III) Main equipment of the concentrator (below) 