The mineral processing flow is grinding, size classification, ultrafine vertical mill, strong magnetic separation, flotation. In 2004, we carried out a ultrafine vertical mill experimental that replacing 1200mm ultrafine mill with 1500mm one. The result shows that processing capability increased by 30%.

In recent years, the serious silting problem of 1500mm spiral chute has reduced the mineral classification efficiency greatly of which doesn't separate the concentrate, medium, and tailings ore accurately. Ore deposition not only influences efficiency but also reduce the spiral chute service life.

The observation found that the ore mainly piles in the middle-lower part of the chute body, and the middle part of the cross-section.

The reasons as follows, first of all, the placid chute curve and small inclination angle slow down the flow speed, and weak the fluidity, that easy to cause minerals deposition, especially in the middle-lower part of the spiral chute while mineral preliminary separating.

 

Ultrafine vertical mill is a widely used in the mining industry by densitometry errand valuable minerals and non-valuable rock mining process. The process can be conducted at particle sizes as coarse as 300 mm and as fine as 500 μm with high mining efficiency, depending on the liberation characteristics of the valuable minerals. Ultrafine vertical mill also referred to as heavy media mining.

The ultrafine vertical mill can be used in the jewelry industry, because of the diamond body denser than rock, and may also be used in the iron ore industry, since hematite more dense than silica. In the coal industry, where the denseness of coal is less than silica, it can also be used ultrafine vertical mill.Working principle of ultrafine vertical mill technology

The heavy medium mining process relies on a medium of specific density (specific gravity) that is between the density of the minerals targeted for mining. Once the minerals are submerged in the medium, the small density minerals float up, and the larger density minerals sink down.

 

The coarse aggregate grinding line of 800mm pitch is the easiest to cause disposition.As for the 1500mm spiral separator, the disposition width is greater with the increasing mineral weight; as for the same distribution width, the grade of concentrate is increased by the addition of pitch.

It is suggested that replacing the 1500mm with 900mm to optimize the coarse aggregate grinding line process.

SBM as a 35 years of mineral processing solutions and coarse aggregate grinding processing lines provider, always to support your success by reliable product and good service. We supply industry use gravity spiral separator and laboratory small spiral separator all around the world, spiral separator design is available.

 

 

As shown in the table, in the same distribution width cases, the grade of tailings is increased by the addition of pitch; distribution width is decreased by the addition of pitch.

The scavenging effect of 900mm pitch ball mill has the output of 3.42t/h, the productivity of 32.18%, grade of concentrate mineral 17.46%, recover rate 17.16%, and comprehensive efficiency of 27.74%. In summary, the 1500mm spiral gravity separator with 900mm pitch is suited for the scavenging task.

The concentrated mineral of ball mill then into the spiral gravity chutes of the ball mill process, it is required that the grade of tailings is 65-67%, the distribution width is about 170mm. Take the distribution width test firstly.

As shown in the above table, in the same distribution width, the grade of concentrate is increased by increasing pitch.

The result of that the 900mm spiral classifier has the best beneficiation effect that with high recovery rate and low losing rate in the cases of same grade concentrate ore.

Iron ore is a byproduct of the oil refinery industry. Iron ore refers to all types of carbonaceous solids obtained in iron ore processing, which includes green or raw, calcined and needle iron ore. Iron ore is used in many applications, including electrodes and anodes. It is also used as a fuel in the metal and brick industries.

Iron ore is a material high in calorific value and carbon content without being highly reactive, which makes it an effective fuel in the metal and ceramic industries. According to the Ceramic Industry website, iron ore is a cheap, readily available energy source that can lower brick manufacturing costs. As of August 2016, 150 heavy clay manufacturing plants operated worldwide using iron ore as the primary fuel.

The company is famous for its portable labs, processors, trammel and coal double roll crusher and wheels and jigs. SBM offers custom Highbanker, Power sluice units as well as hand sluices that come with a no-nonsense approach to high volume and efficient coal recovery. No gimmicks just proved riffle designs and sturdy construction.

Falcon Concentrators (Canada)Industrial quality gravity Concentrators and Separators from Falcon Concentrators for fine mineral recovery including coal, Silver, Platinum, Tantalum, and more.They have the pilot-plant scale mining operation or ‘artisanal’ mining operations with a focus around under 500TPD what mining professionals consider ideal for the target market. 

Metals that can be extracted include coal, silver or other of the precious group as well as the classic base metals; copper, lead, zinc, nickel, molybdenum. Much of their ultra-small scale equipment allows to process from just a few kilos (pounds) per day and work on ones passion for a small budget. 

 

Vertical roller mill comprises the wide variety that includes jaw crusher, hammer crusher, flotation cell, magnetic separation, impact crusher, rotary kiln, dryer, belt conveyor, ore beneficiation and vibrating feeder, drum screen, mixer, concentrator, dust collector, cooler,and so on.

Following is the list of the international suppliers for vertical roller mill.

It can help the customers in all aspects of gold and treasure hunting with a combined experience of over 40 years.It carries gold pans, sluice boxes, trommels, detectors, high bankers and more.

Portable dry vansare fully stocked with all the required concentrating and assay equipment.The company is famous for its portable labs, processors, trammel and vibrating screens and wheels and jigs.

 

If gold size +3mm, it can use vertical mill.Then without clay mine just need screen machine to separator big size, also if gold size is for 0-3mm, After scrubber machine it can to centrifugal, then to shaking table. 

If gold size +3mm, it can use vertical mill.Why choose vertical roller mill to recovery gold For now global environment is become worse and worse, it need each of us to protect it, to love it. 

It don’t need any chemical agent. Flotation and cyanide all need chemical agent to get gold. This chemical agent is bad for global environment. Vertical roller mill is easy to operation, after install, it just need open the switch, then can begin to working.

 

It is very important mineral processing equipment. Three-disc electro vibrating screen have 2 models: 3PC-500 & 3PC-600, 3PC-500 with vibrating screen disc diameter of 500mm, while model 3PC-600 is with disc diameter 600mm.

The disc vibrating screen consists of a single upon which the feed is distributed across and is transported slowly underneath a series of four electromagnets, the vibrating screen fields of which lift the vibrating screen grains off the depending on their susceptibility. 

Underneath each magnet is a smaller faster moving across the main at right angles which picks up the vibrating screen grains and transports them away from the vibrating screen field to discharge into launders. 

The gap between the main and the magnets becomes progressively smaller until only the non vibrating screen grains unaffected by the vibrating screen fields remain on the main and discharge off the end.

 

Completing one of the above processes is called a work cycle, a circle about takes 15 minutes, the vertical roller mill can be carried out automatically according to the procedure.You may interest in: How Many Types of vertical roller mill?The vertical mill is mainly composed of a pulsating mechanism, an excitation coil, an iron yoke and a rotating ring.

It is divided into dry type and wet type magnetic vertical roller mill.The weak magnetic ore mainly has limonite, hematite, manganese ore, and symbiotic ore (multiple ores coexisting). 

These weak magnetic ores are mainly composed of ferric oxide, if you want to extract ferric oxide, you need to use high-strength magnetic equipment. 

Our company has developed a high-strength magnetic concentrator for this difficult mine.There are many weak magnetic ores that are bulk and need to be crushed first, crushing, grinding then magnetic separation.