Copper ore crushing production line
Copper ore characteristics:
1. Copper ores are generally aggregates of copper sulfides or oxides and other minerals. In the metal kingdom, copper is second only to silver in conductivity. Copper mines are more and cheaper than silver mines.
2. As one of the core materials needed in the high-tech industry, copper has a very high economic value, and the copper ore production and processing industry also has a very high return on investment profits.
3. In today's world, more than half of copper is used in electricity and telecommunications industries.
4. The industrial minerals of copper are: natural copper, chalcopyrite, tetrahedrite, blue copper, malachite and so on. Chalcopyrite (copper, sulfur, iron compounds) is mainly exploited in China, followed by chalcopyrite and chalcopyrite.
The crushing equipment and the general crushing process are divided into three sections or four sections in the selected plant of the above-medium scale, and the crushing and inspection and screening process is adopted in many selected plants so as to achieve the modern ore dressing concept of the multi-crushing and less grinding. During the production practice of more than 20 years, Dahua Heavy Industry has a very mature experience in the process, and can be equipped with various forms and specifications of crushing and screening equipment.
Grinding equipment, since the 19th century, ball mill has been the best choice of grinding equipment, because of the simple structure of ball mill, strong process controllability, convenient maintenance and long service life, it occupies the dominant position of grinding equipment. The single processing capacity of ball mill produced by Dahua heavy Industry can reach 300 kg / 2500 t / d, which can basically meet all kinds of technological requirements.
Classification equipment is a professional equipment for the inspection and control of particle size of separation process. The common classification equipment is spiral grader, high frequency screen, hydrocyclone and so on.
Flotation equipment, flotation equipment is the main equipment of chemical floatation, mainly: flotation column, flotation cell. The floatation cell also has many kinds of models and different volumes. Choose the corresponding model and volume according to different processes. At present, the floatation machine produced by Dahua heavy Industry can fully meet the needs of different situations.
The copper concentrate obtained after flotation also needs to be filtered, dried and packaged. The selection of these equipment can be selected according to the scale of the plant.
There are many forms and methods of tailings treatment. It is more common to use tailings dam before 1970s. In recent years, the newly developed tailings dry reactor equipment and technology developed by Dahua Company have been widely used, and the new equipment and new technology have been popularized and applied. The investment in tailings treatment of concentrator is greatly reduced.
Main equipment for ore dressing:
According to the usual mineral processing process, it is generally divided into crushing, grinding, classification, flotation-refined copper ore (copper fine powder) and tailings treatment process.
Different types of copper ore processing technology:
1. Porphyry copper deposit:
Copper-Mo deposits, which are mainly accompanied by Mo, often exist in porphyry copper deposits. Because of their large reserves, copper deposits are not only an important resource for copper extraction, but also an important source of Mo. Because this kind of deposit has the characteristics of low grade of raw ore and fine grain size, and molybdate has layered structure and good natural floatability, it is often closely symbiotic with chalcopyrite and pyrite. Therefore, the recovery of molybdate from copper-Mo ore is more difficult and complex than that from ore dominated by molybdate, and the recovery of Mo is often restricted by the recovery of copper.
2. Mineral processing methods of copper oxide ore:
The main mineral types of copper oxide ore include malachite, silica malachite, blue copper ore, chalcopyrite, alum, water gallbladder alum, copper oxide and so on. The solubility of malachite and blue copper ore is relatively better than that of other ores. It can be recovered by direct floatation or vulcanization flotation. The floatability of silica malachite is poor, so its flotation is restricted by strict conditions. Chemical separation and floatation can be used to treat chalcopyrite, water cholinite and oxygen copper. It will be dissolved by pulp in flotation, so that copper loss in tailings is dominated by chalcopyrite and malachite, and the grade of copper in raw ore is high. The combined copper oxide is also treated by floatation method, which is characterized by extremely fine particles wrapped in limonite or mud, and the copper grade is low. If the gangue is silicate, it is difficult to be selected and can be recovered by chemical ore separation method.
3. Mineral processing methods of copper sulfide ore:
Copper sulfide ore can be divided into:single copper ore, copper sulfur ore, copper-pyrite, copper-molybdenum ore, copper-nickel ore, copper-cobalt ore, etc. There are different process methods according to different mineral types. Almost all copper sulfide ores have iron sulfides, so in a sense, the flotation of copper sulfide ore is essentially the separation of copper sulfide and iron sulfide.
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