1. What is the principle of the selection of the spiral concentrator ?
The spiral concentrator is made up of 4-6 turns of spiral chutes. It is surrounded by a rubber tire with a cast iron or grooves, groove ceramics production. When a certain concentration of slurry is fed into the upper part of the spiral concentrator, the slurry language spiral groove rotates downward under the action of gravity and centrifugal force. The larger ore particles first sink to the bottom of the tank, and the smaller specific gravity particles flow in the upper layer of the slurry. The large-volume ore particles that sink at the bottom of the trough have small frictional force and large frictional force. Therefore, the velocity along the trough is small, the centrifugal force is also small, and the inner edge of the trough is close during the movement. The small-weight ore particles moving in the upper layer of the slurry have a large flow velocity in the upper layer, so the velocity along the groove is large, and the centrifugal force is large, so that it is close to the outer edge of the groove. In this way, it is possible to intercept the ore particles with different specific gravity at different positions of the spiral to achieve the purpose of selection.
2. What are the main factors affecting the operation of the spiral concentrator?
There are many operational factors affecting the spiral concentrator, among which there are adjustable ore supply, ore concentration and flushing water volume. The ore amount is related to the diameter of the spiral concentrator, the helix angle, the shape of the spiral groove section and the nature of the ore. The productivity increases as the diameter of the helix and the helix angle increase. The finer the particle size of the ore and the grain size of the heavy product, the higher the mud content, the lower the productivity. The concentration of the ore concentration should be lower than that of the rough selection. The concentration of the ore concentrate is not high, generally 11-14%. Flushing water should also be properly controlled, and its main function can improve the quality of heavy products.
3. What are the advantages and disadvantages of the spiral concentrator and what kind of minerals and operations?
The machine has the advantages of simple structure, easy operation and maintenance, high productivity and large adaptability. Especially when the ore concentration and the ore concentration change within a certain range, the influence on the concentrate quality and recovery rate is not obvious. The disadvantage is that the selection of the flaky ore is not good.
Spiral concentrator is mainly used for sorting of sands, such as iron ore, ore, tin, tantalum and niobium ore.
The machine is generally used for roughing operations, and can also be used to treat magnetic separation and flotation tailings, from which heavy minerals are recovered. The most suitable treatment ore particle size upper limit is 3-4 mm, the lower limit is 0.07 mm.
Organic acids refer to some organic compounds that are acidic. The most common organic acid is carboxylic acid (R-COOH), which derives its acidity from carboxyl (-COOH). Sulfonic acid (R-SO3H), sulfonic acid (R-SOOH), thiocyboxylic acid (R-SH) and so on are also organic acids.
Organic acids include natural organic acids and synthetic organic acids. Natural organic acids are mainly extracted and isolated from plants or agricultural and sideline products in nature to obtain organic acids with certain physiological activity, while synthetic organic acids are organic acids obtained by chemical synthesis, enzyme catalysis and microbial fermentation. Natural organic acids are widely distributed in the leaves, roots and especially fruits of Chinese herbal medicines and fruits, such as wumei, schisandra, raspberry, etc., and citric acid, malic acid, tartaric acid and quinine acid are mostly in green plums. Common methods for synthesizing organic acids include the production of citric acid by aspergillus niger fermentation and the production of malic acid by immobilized cell technology.
Organic acids can be reacted with alcohols to form esters. Carboxylic acids are functional groups of carboxylic acids, which, in addition to formic acid (H-COOH), can be seen as derivatives of hydrogen atoms in hydrocarbon molecules that have been replaced by carboxyl groups. Can be expressed in the general formula (Ar) R-COOH. Carboxylic acids are often widely present in nature in the form of free states or in the form of salts and esters. The hydrogen atoms on the hydrocarbon group in the carboxylic acid molecule are substituted by other atoms or atomic groups of derivatives called substituted carboxylic acids. Important substituted carboxylic acids include halogenated acids, hydroxy acids, ketoacids and amino acids. Some of these compounds are involved in the metabolism of animals and plants, some are intermediate products of metabolism, some have significant biological activity, can prevent diseases and cure diseases, and some are raw materials for organic synthesis, industrial and agricultural production and pharmaceutical industry.
Carboxylic Acid,Organic Acids, Acidic Organic Compound,Example For Organic Acid
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