In the practice of flotation, in order to overcome the deterioration of the flotation process by fine mud and to eliminate the harmful effects of fine mud, the following measures are often adopted.
(1) Conventional flotation treatment of fine mud
1 When the fine mud is not too much, add a dispersant to reduce its impact.
Generally be added to the water glass, phosphate, sodium hexametaphosphate. The dispersant is a pure electrolyte that acts to increase the electromotive force on the surface of the fine mud. When the fine muds are close to each other, they are mutually repelled due to the same electrical properties, so that the slime acts as a dispersion to prevent non-selective agglomeration of the fine mud.
The method of adding a dispersing agent is relatively simple, and is suitable for a case where the mud is less. However, this method still cannot solve the shortcomings such as poor selectivity and large dosage of chemicals caused by the fine mud, so it is often necessary to strengthen the selection operation in production practice.
2 remove the slime before flotation
There are two ways to remove mud beforehand: flotation de-sludge and mechanical de-sludge. Flotation de-slurry is to use a small amount of foaming agent and collector to float a part of the slime and then carry out coarse flotation. Mechanical desilting is the use of a classifier (such as a hydrocyclone) to remove a portion of the fine mud prior to flotation. The particle size of the general deliming is 10.20 microns. Deslimation grade is mainly determined by the performance of the classification equipment . After de-sludge, the effect of coarse flotation can also be improved. The main problem is difficult to deal with fine mud, fine mud useful if very little mineral content can be discarded, but often useful in fine clay minerals in ore grade and almost, if it abandoned on the Slimes metal lost in vain.
3 mud sand sorting
Process requirements for fine flotation of fine mud
: a. It is advisable to use a longer flotation time. According to the data, the flotation time of less than 10 micron is as long as 40-60 minutes;
b. High concentration of pulp (up to 60%-70% pulp concentration), low concentration flotation (generally less than 20%);
c. Sub-dosing, increase the amount of collector, reduce the amount of foaming agent;
d. Large amount of inflation, small bubbles, weakening the rise of slurry flow.
In actual production, it is difficult to meet the above-mentioned fine mud flotation process requirements, so the index of fine mud flotation is not high. Although the above method of treating fine mud is used for production, it does not solve the special process of fine mud flotation. From the current research trend, there are two ways to increase the flotation speed of fine particles: one is to increase the particle size of fine flotation; the other is to reduce the particle size of flotation bubbles.
Zowell XP30 Electric Pallet Truck with 3000kg load capacity is a material handling equipment mainly used in the transfer of materials in pallet inside and outside the production line and warehouse. The pallet truck is only used for plane transportation for no lifting mast. Although the pallet truck cannot lift the goods, but the purchase and maintenance costs are quite lower than other forklifts.
Zowell XP electric pallet trucks are equipped with AC drive motor and multi-functional handle, emergency switch, dual balance wheel as well as side loading battery for safety, efficiency and less fatigue in operation. Buffered pedal also extends the flexibility for various scenarios.
Detail features
1. Multifunctional handle
The multifunctional handle is imported from Germany. The operators can control
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2. Safety protection
The soft PU armrest features a superior resistance to compression and impact,
thus reducing indirect hits and injury during stacker movement. This can
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The power can be rapidly cut off in an emergency to ensure safety.
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The foldable pedal saves space when the stacker is not in use. It features an
excellent shock absorption function, providing comfort for the operators, and
reduce working fatigue.
5. Side loading and unloading of storage battery
Side loading and unloading of storage battery makes maintenance and changing
easy. Users can select among different brands, including FAMM, GS, HOPPECKE,
and Trojan.
6. Dual balance wheel device
This device has a high passing ability because the running is stable.
7. AC drive
The maintenance free AC drive motor has no carbon brush, no contacts, a large
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The lifting height can be precisely controlled to reduce energy waste.
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A multifunctional meter can display integrated electricity quantity, working time
and failure codes. The operators can know the running condition of the stacker
via the meter.
10. High power pump station
The 2.2kw high power pump station can provide a strong power for transporting
goods. The noise is low as well. The whole truck noise is lower than 70 dB.
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