Henan Gongyi Fuwei Heavy Industry Machinery Factory

Stone crushing equipment consists of jaw crusher, impact crusher, cone crusher, fine crusher, roll crusher, hammer crusher, mobile crushing station, etc. Process of rock crushing line: Big size stones are transferred to primary crusher through Vibrating Feeder from hopper for first crushing, then the crushed materials are transferred to Impact Crusher through Belt Conveyor for secondary crushing. The crushed materials will be transferred to the vibrating screen, and separated to different sizes. The aggregate with suitable size will be transferred to the final product pile and that with unsuitable size will be transferred to the Impact Crusher for re-crushing. This forms closed circuit manifold cycles. The sizes of final products will be graded and separated according to customers' requirements, and the deduster will be attached for the sake of environment protection. Characteristics of stone crushing line: They are widely used in the mine, metallurgy, building materials, highway, railway, water irrigation and chemical industry. They have the features: Big crushing ratio, even granularity, simple structure, reliable working condition, convenient repair and economical operation. This factory produces various types of rock crushing and screening device, including coarse crushing Jaw type, fine crushing Jaw type, cone type, impact type breaker and vibration feeding machine, reciprocating sieve, belt conveyor, they have the characteristics of large crushing ratio, granularity is even, advanced structure, reliable work, excellent quality., the use service is convenient, low operation expenses, etc. Deeply welcomed by domestic and foreign customers. Our factory can offer many kinds of sets of equipment to meet the different stone materials yard production needs, provides the quarry design, the equipment setup, the debugging start-to-finish service for the user. This equipment widely uses in the stone material factory, the mine, the metallurgy, the building materials, the road, the railroad, the water conservation, the chemical industry and other departments. Productivity from 50-500t/h, product size can be according to the users' different needs combination and classification.

One kind of gold beneficiation process takes two closed half a broken, two second closed-circuit grinding, and then optimization of flotation, featured. And its tailings is the election of a rough one other operation, and featured concentrate tailings and swept the election are mixed together to regrinding re-election with original ore. So this process has high broken effective. The fine-grained level in final broken product is over 81.55%. Its breaking capacity is great that is 53.84 ton per hour. It has short working time, effective sorting and technical indicators for the high that can improve ore-dressing recovery and concentrate grade at the same time. Recovery ratio is improved by 3.03%, and concentrate grade is improved by 16.57 g/t, and power is reduced 21.5%, and the cost is reduced by 18.9%. And the annual economic efficiency is added by 8.6012 million Yuan.

The flotation separating process including storage bin, chute feeder, vibrating feeder, PE jaw crusher, vibrating screen, pendulum feeder, ball mill, high frequency screen, mixing barrel, flotation separator, concentrator, filter press, dryer, etc, they have the characteristics of large crushing ratio, granularity is even, advanced structure, reliable work, excellent quality., the use service is convenient, low operation expenses, etc. They have the characteristics of large crushing ratio, granularity is even, advanced structure, reliable work, excellent quality., the use service is convenient, low operation expenses, etc. Deeply welcomed by domestic and foreign customers. Our factory can offer many kinds of sets of equipment to meet the different stone materials yard production needs, and in line with management objective of "quality first, customer supreme&", provides the quarry design, the equipment setup, the debugging start-to-finish service for the user.

The ore mined is first brought to jaw crusher for preliminary breaking, and after broken to reasonable fineness evenly taken into ball mill by hoist and vibrating feeder for crushing and grinding. The fine ore stuff grinded by the ball mill enters into the next process: classification. The spiral classifier uses the principle that solid particles of different proportion have different settling velocity in liquid to cleanse and classify the ore mixture. When the cleansed and classified ore mixture passing the magnetic separator, the magnetic materials contained in the mixture will be separated by magnetic force and mechanical force due to their different specific magnetization coefficient. And then the mineral particles that are preliminarily separated by the magnetic separator are sent to the flotation machine and mixed with different chemicals according to the characteristics of different minerals contained to separate the targeted minerals from other materials. After the targeted minerals are separated, as they carry a lot of moisture, they must be preliminarily enriched by the thickener and dried by the drier and then dry minerals can be got.

The mian method of molybdenum ore beneficiation is flotation. The recovery molybdenum is molybdenite. Sometimes in order to improve quality of molybdenum concentrate and to remove impurities, molybdenum concentrate is dealt by chemical beneficiation once again. Molybdenite crystals has six-layered or plate-type structure which is formed by paradigm of health along the inter-layer s-mo-s structure and the layer of polar covalent bond s-mo. The binding among layers is weak, but covalent bond binding inner the layer is strong. So molybdenite is easy solution fissure along structural layer to show sheet or plate. This is the reason that digenite has well floatability in nature. Practice has proved that with suitable grinding fineness, molybdenite crystals dissociat in s-mo-s layer and the hydrophilic s-mo takes up little area. But through mill, the area ratio increases, and floatability reduces. Although at this time to add some quantity of polarity collector such as xanthate, which is benefit for the recovery of molybdenite, new slime, caused during mill, affects flotation results. So molybdenite of sorting should avoid and prevent grinding. In the production, we should take the process of sub-ore grinding and multi-stage sorting to achieve monomer dissociation and to make sure high recovery rate of molybdenum.

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