Xinhai Jaw crusher for sale

A jaw crusher uses compressive force for breaking of particle. This mechanical pressure is achieved by the two jaws of the crusher of which one is fixed while the other reciprocates. A jaw or toggle crusher consists of a set of vertical jaws, one jaw is kept stationary and is called a fixed jaw while the other jaw, called a swing jaw, moves back and forth relative to it, by a cam or pitman mechanism, acting like a class II never or a nutcracker. The volume or cavity between the two jaws is called the crushing chamber. The movement of the swing jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that causes the closing of the gap.
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Comparative Analysis of Spiral Classifier and Hydrocyclone

Spiral classifier and hydrocyclone are both mineral processing classifiers.  The ore processing classifier generally include four kinds, increased flow hydrocyclone classifier, cone classifier, centrifugal classifier( hydrocyclone ) and mechanical classifier ( rake classifier, spiral Classifier and Floating tank classifier). Today, we are going to only choose Spiral classifier and hydrocyclone those two equipment to create a detailed comparison, the reason being that they are one of the most popular classifiers in this mill plant, currently.
Spiral Classifier is a form of mechanical classifier, which is composited by u-shaped cistern, spiral device, transmission device, lifting mechanism, bearings and also other parts.
The running principle of spiral classifier is: the milled pump was fed to the u-shaped slot from spiral classifiers feeding mouth, following the continuously rotations and stirrings from the spiral device, the sunshine and fine particles were suspended from the pulp surface and flowed through the overflow weir; as well as the thick and heavy particles were settled on the bottom, transported through the spiral device for the port of discharge, re-entered the mill grinding.
You will find generally two spiral classifier classification methods, you are as per the number of screw shaft, it could be separated into double and single spiral classifier spiral classifier; Another kind is using the overflow weir height, it could be separated into high low weir, weir and submerged.
Hydrocyclone is a type of using centrifugal force role grading equipment, mainly comprised by the feed tube, cone, cylinder shell, sand mouth and overflow pipe, etc.
The significant principle of hydrocyclone is: under the pressure of 0.5-2.5 kg / cm2 within the inlet, the pulp was feed into the cyclone cylinder along the down the tangent direction with the feed tube. Quite a lot of centrifugal force was produced due to the rotations of the inside part of hydrocyclone, under the action of centrifugal force, the coarser one was thrown towards wall, combined with spiral descent flow, and was discharged in the discharge mouth.
Benefits of hydrocyclone are: It's simply constructed and has no moving parts; your little friend size covered small footprint; it has large capacity per unit area, and very easy to operate and look after, so, the charge is extremely low; whats more, the classification efficiency and sorting accuracy tend to be more higher; also it needs lesser quantity and time for pulp to keep; the benefits are more apparent when working with a sizable ball mill. Naturally, the hydrocyclone has its shortcomings, such as pulp needs your head in the pump to delivery; it takes stable working pressure when working; and possesses higher demand to the particle size and power of the pulp, what else is the fact, it might be worn more severe.
Spiral classifier has more significantly highlighting advantages compared to hydrocyclone, like, It can be reliable and straightforward to function; the staging area is smooth and finer overflowed particle size can be purchased. Whats more, the trough slope is easier for sand returning into towards ball mill. As well as these, a few of domestic mining machine manufacturers have improvements to spiral classifier, e.g.，Yantai Xinhai mining machinery company has give a sand-returning automatic lifting device inside the sand-returning end in the spiral classifier, so as to substitute the tablespoons head from the ball mill. Which enables the ball mill run more smoothly.
Shortcomings of spiral classifier are: Its relatively cumbersome and also the classification efficiency is low; the spindle is frangible and the maintenance is very inconvenient; possesses poor overflow bearing seal in the bottom of spiral classifier; what else, a finer classification overflow fineness is tough to acquire particularly when the asked overflow granularity is -0.074mm and accounts greater than 90%.
Overall, spiral classifier and hydrocyclone are widely applied in this country, each one has his metier.

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Gold beneficiation production line

Yantai Xinhai gold CIP beneficiation production line include crushing, grinding, classification, cyaniding and carbon slurry separating gold. This method reducing cost and cyanide usage. This method is suitable for treating mud content and bad filter ore. The gold CIP beneficiation processing is a common method for gold separation.

Capacity

≤250t/h

Crushing, grinding and classification:

Crushing, grinding and classification process adopting Xinhai ultra fine laminating autogenous mill. One stage open circuit crushing and one stage closed circuit increase the process time greatly. The main equipment include: jaw crusher, ultra fine laminating autogenous mill, grate ball mill, Xinhai abrasion resistant rubber pump and Xinhai abrasion resistant cyclone.

The ore is crushed by jaw crusher transported by plate feeder. The output is delivered into Xinhai ultra fine laminating autogenous mill by belt conveyor. Under the action of grinding peel force, impact and layer pressure, -200 mesh ore more than 45%. After pass through the linear vibrating screen, the over product enter grate ball mill and then delivered into hydraulic cyclone. On the other hand, the qualified ore enter the next process. The ore is -200 mesh 60-70%.

Cyaniding:

The cyaniding is the most important stage of gold CIP process and it will affect gold index directly. This gold beneficiation process adopts pressure air agitating. The main equipment include intermediate drive type, air compressor, roots blower, whole section inflatable leaching tank and box type filter press.

After the ore being grinded, they enter the intermediate transmission thickener. When the concentrate is correct, the ore enter full section air leaching tank. The gold dissolve in leaching tank. The ore slurry enter through box pressure filters for solid and liquid separation. The solid is tailings and the liquid go back to leaching tank.

Carbon plasma method for extracting gold

Carbon plasma method is the main guarantee. This method include pre-treatment, absorbing, desorbs, turmeric and desorbs-carbon active. It is suitable for oxidation gold content sand. The main equipment include: analytic tower, electrolytic tank, heat exchanger and filter, etc.

Pre-treat is pre-grinding of activated carbon. Reduce the edge of activated carbon and reduce the loss of gold. The underflow go back to the ball mill for regrinding and the overflow is sent to the second stage ball mill for fine grinding. The concentrated overflow is sent into thickener for concentration. The underflow is delivered into leaching tank(full section, aerate). The air is added by air compressor and rose air blower, meanwhile, the reagent and activated carbon is added. After discharged by the last adsorption tank, it become tailings and gold carbon. After turmeric and smelting, the gold ingot is produced.
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Magnetite beneficiation production line

Magnetite beneficiation production line is designed by Yantai Xinhai Mining Machinery company according to its rich experience in mineral processing. The application of ultra fine laminating autogenous mill increase the capacity by 100% and reduce energy consumption by 60%. Which is a good example for "more crushing and less grinding".

Capacity

≤250t/h

Crushing, grinding and classification processes:

The unique equipment---ultra fine laminating autogenous mill and Xinhai abrasion resistant hydraulic cyclone instead the processes of fine crushing and rough grinding. The ore treated by ultra fine laminating autogenous mill is -200 mesh more than 40%. Besides, through magnetic separation, 40-45% gangue can be removed. What is more, it is less area occupied.

The magnetite transported by plate feeder went to crushing process in jaw crusher and then storage in fine ore bin. These mineral come in into ultra fine laminating autogenous mill through belt conveyor. Under the action of grinding peel force, impact force and pressure, a lot of gangue is removed. What is more, after classification, the overflow enter the beneficiation process.

Magnetic separation :

The magnetic separation is the most important part of the beneficiation. The magnetic separation efficiency determine the grade of the concentrate. Yantai Xinhai magenetic separation adopting 3 stage magnetic separation. The equipment is adopting Yantai Xinhai beneficiation machinery and Yantai Xinhai abrasion resistant rubber. The equipment include magnetic separator, Xinhai abrasion resistant pump and ceramics filter.

The overflow of hydraulic cyclone is transported to rough magnetic separator through pipes. The rough tailings is delivered into scavenging magnetic separator and then discharged into tailings pond. The concentrate enter into concentrate magnetic separator. The product is qualified concentrate.

Tailings dry stacking:

Tailings dry stacking is an important part of magnetite beneficiation and plays an important role in cost decrease. Besides, tailings dry stacking is a patent of Xinhai. As long as the water resource is lacking, it has high value. The main equipments of tailings dry line include efficient thickener, inclined plate thickener, high efficiency deep cone many cone thickener, xin sea dehydration type hydro-cyclones, efficient multi-frequency dewatering screen.

Tailings enter into high efficiency thickener through Xinhai slurry pump. After concentration, it is delivered into plate thickener then enter into hydraulic cyclone. The overflow enter into deep cone thickener with multi cone. After pass through high efficiency multi frequency dewatering screen, the water is recycled and tailings dry stacking.

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The placement of Hydrocyclone

The force of gravity is no significant meaning in Hydrocyclone separation, unless it's separated with the case of very coarse particles. In principle, have no need for special consideration the gravitational direction, i.e., the axis in the hydrocyclone may be put in almost any direction, vertical, diagonal, horizontal, and in some cases can be placed the other way up, it might work as usual. As an example, a factory australia wide from the application to get a particular separation purification purposes, offers to hydrocyclones inverted to realize satisfactory results.

XC4 hydrocyclone
For solid – liquid separation is concerned, under normal circumstances should not be placed horizontally or upside down, and the inclination should be used primarily vertically, so your flow at the conclusion, even though the specified horizontal,, hydrocyclone should also make the axis of the horizontal direction we have a small dip between solid – with ritual cyclone underflow liquid separation using orifice clogging problem, under normal circumstances would require hydrocyclones vertical or inclined installation, unless large diameter hydrocyclone axial larger size, don't let vertical mounting outside of the workplace, there is no need to use the cyclone level. Gravity separation within a large solid – liquid hydrocyclone likewise have some influence on the separation efficiency could be affected. Meanwhile, the cyclone flow phenomena simply speaking, makes many of the particles along the the top of overflow discharge port, especially when placed horizontally, may have known as a lot of particles with all the overflow discharge. While vertically, sedimentation of large particles, you possibly can avoid a brief circuit with the discharge flow. Therefore, thinking about the separation of solid – liquid separation hydrocyclone general ought to choose to install vertical and inclined position.
For liquid – liquid separation cyclone the situation is unique. Generally speaking, the liquid – liquid separation Hydrocyclone axial dimension larger diameter and small, vertical installation often inconvenient. Even though set up in the manifold and other considerations, make vertical installation is quite difficult, greatly helping the cost. More to the point, whilst liquid – liquid separation when a smaller proportion with the distinction between each media, usually not many tenths of gravity separation in liquid – liquid cyclone goes that basically can not work, so from the perspective in the force of gravity, mounting the vertical position with the separation performance without significant improvement. Phase from the light, the sunshine phase separated in the overflow discharge port, if placed perpendicular to the axis, horizontal axis, the core across the horizontal direction of light phase, that's prepared to overflow port at a rate direction movement, helping the separation efficiency. Phase separation of media from light look more favorable horizontal axis. Determined by these reasons, the liquid – liquid cyclone, either stand-alone or combined, are basically horizontal mounting, there may be little case of any vertical installation.

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Flotation machine operating procedures

Items to check before operation

First, to prevent debris into the flotation tank, in order to avoid jammed impeller, clogging false bottom circulation holes and channels affect pulp cycle and, if necessary, should play an open mine gate rinse tank to eliminate debris.

Second, check valve ore, hold switch and flexible. Production of other requirements depending on the options, the adjustment of discharge, to maintain a desired level height pulp.

Third, all of flotation machine and blade drive V-belt must be secured neatly smooth, elastic consistency.

Fourth, the cabinet must be smooth rubber lined neatly, false bottom and steady flow plates, baffle must be complete, set stable.

Fifth, check the air line is smooth, if unimpeded should be clear immediately.

Six, check liquid level control system is flexible and reliable.

Seven, if filled with grease spot inspection of each oiler mixing bucket, the proper amount of grease to the bearing ② Check all loose fasteners.

Eight, hand plate moving mixing bucket pulley device to observe the vertical axis rotation is flexible impeller is collision, friction deflector phenomenon.

From the car order

First, the empty slot start

First to the mine, started mixing drum, start-up and connected to the mining midge box flotation machine, start the DC groove adjacent pulp flotation machine until completely submerged cover.

Second, after the shutdown started full tank

At full tank starts, follow the pulp flow direction, until the next station after starting the process equipment in order to open mixing drum, the first drive, and then open the ore slurry flows into the tube so that the slot until the flooding so far, but not the pulp from the mixing drum along spills, and then put into a predetermined chemical, resume normal stirring operation. Successive start from the last tank to the first slot.

Boot sequence: 1) Make sure the air intake pipe tune lid open. 2) Start the flotation machine motor. 3) Start stir

Mix barrel. 4) began to mine.

Third, according to the process from the car

Open roughing, fine Ⅰ, Ⅱ fine flotation machine, flotation open sub-ore slurry tank.

Parking order

First, the flotation machine downtime order emptying pulp

1, stop to mine.

2, to the mine after a complete stop, open the rear gate. 3, stop mixing drum 4, the normal operation of the flotation machine.

5, you can see the cover, turn off the flotation machine motor. 6, play an open valve to drain away the ore slurry tank surplus.

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Xinhai Gold processing project in Mali Africa

Gold processing project in Mali Africa can be an EPC service project. It turned out signed by the African customer and Xinhai group when he stumbled on China to have an inspection. The consumer was originally to work with.. .method. But good ore dressing experiment done by Xinhai group customer, they finally think the entire mud cyaniding carbon plasma process is best choice. The project is extremely evaluated from the African customer. The subsequent contents are beginning of processing plan which was done by Xinhai mining design institute and beneficiation research.

Firstly, foundation of beneficiation scheme design
A, The relevant information and processing procedure collected inside field.
B, The agreed capacity: 1000 t/d.
C, The washability test report was presented with by Xinhai ore beneficiation research institute.
D, Additional unknown conditions temporarily processed according to conventional processing procedure.
Secondly, the structure scale, product and operation system
A, The modern mill production scale is 1000 t/d, implements the device of continuous operation, lasting for300 days annually.
B, Mineral extraction methods: Dump leaching the coarse grains and taking advantage of the complete mud cyaniding carbon plasma method process the fine particles, finally while using gold wet smelting process.
C, Product program: 99.9% gold bullion.
Thirdly, the beneficiation test
The client provide two ore samples, respectively thought as PY - 2 and PY - 3, PY - 2 ore sheet is coarse particles and PY - 3 ore sample is okay clay particles. Its small laboratory test. We draw the subsequent conclusions with the contrast of different sorts of test schemes like heap leaching, gravity separation and all of mud cyanidation method.
The coarse ore PY-2 is suitable for heap leaching technique to recovery gold. Undressed ore heap leaching use the sodium hydroxide to safeguard alkali with dosage of 8 kg/t; Dosage of sodium cyanide is 4 kg/t, heap leaching time is 168 hours, the leaching rate of gold is 88.55%.
The fine clay particles PY - 3 is correct for the mud recycling gold cyanide solution. When grinding fineness of undressed ore cyanide is- 200 mesh and 82.88%, calcined lime is utilized to defend the bottom, the amount of calcined lime is 8 ~ 9 kg/t; The dosage of sodium cyanide is 1 kg/t, cyaniding for 24 hours along with the leaching rate of gold is 88.00%.
Good above data and the practical situation in the mine and site photo, Xinhai beneficiation research institute made the first stage on the project:
By screening and grinding cyanide heap leaching process to recovery gold, the undressed ore heap leaching way is useful for the coarse grain and fine grinding one utilize cyanide test method. As soon as the separation of mine ore, use heap leaching method to process the coarse grain, the leaching rate of gold can be had at 66.67%.The fine one can possibly be cyanided, and making use of 9.5 kg/t dosage of calcium oxide to protect alkali round the clock, the leaching rate of gold can be had at 85.57%. Total gold recovery rate is 85.17%. The following picture is the procedure engineering flow scheme for African Mali project expressed by Xinhai.
This would be the screening classification part, by way of a feeder the undressed ore were fed into your belt conveyor then transported for the double layer vibrating screen for screening. Heap leaching the screened out + 30 mm and + 5 mm one, as well as the screened out- 5 mm one were listed in the cyclone classification machine firstly. Over time of grinding, the bottom flow from the cyclone alongside the overflowed ones then glance at the complete mud cyaniding carbon adsorption systems. Using the research into the core sample as well as the practical situation from the site, the heap leaching production is 1600 t/d, 10thousand ton for 2 months and many types of-slimed cyaniding is 2400 t/; Cyanide leaching analytic the electrolytic parts, as well as the - 60 mesh ones were transported to the leaching tank for leaching adsorption through the pum.
For heap leaching parts, throughout the steps of heap building, spray and expensive liquid adsorption, the gold mud was obtain by parsing and electrolyzing the gold-loaded carbon. For wed smelting parts, analytical electrolytic gold mud are  over the melting system regularly, and finally get the gold of 99.9%; For tailings parts, damming the first years tailings plainly and backfilling the other year plus the later tailings.
The planning passed over the practice in the African clients inspection and achieved the expected index. The African client is quite enthusiastic about that.

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