SU5278A1 - Method of separating carbonaceous combustible materials from mineral impurities - Google Patents

Description

The present invention relates to oil enrichment of minerals based on the use of oils that are capable of wetting certain parts of the ore I mixture.

For the purpose of separating carbonaceous particles in coal, lignite, shale, etc., solid combustible materials | from the mineral impurities found in them, a method is proposed as follows.

Finely powdered powdered coal passing through a sieve with 100 holes per square meter. inch, and a fluid that has the ability to wet carbonaceous lisch

particles of the material being processed and not displaced with water, such as gasoline, oil, fuel oil, gasoline, etc., are shaken in water until a suspension of carbonaceous particles is formed, after which the water with its impurities is removed and the oil suspension is washed water

It is possible to perform the operation of moving carbonaceous particles with oil somewhat differently: the pre-crushed coal is displaced with water, at which carbonaceous particles are suspended in water, then an oily combustible liquid is added to wet the carbonaceous particles and agitate

both liquids to form a mixture of carbonaceous particles with a flammable liquid. In addition, it is also possible to inject a flammable liquid into the tank, in which carbonaceous particles are separated from mineral impurities, simultaneously with water, in which the processed material is in a suspended state, due to which the materials are mixed up before entering the mixing tank.

Grinding of the processed material is usually done before passing it through a sieve with 100 to 200 holes per square meter. An inch, in general, the degree of crushing depends on the structure of coal and the amount of impurities, has a significant impact on the amount of impurities to be removed, and the finer the grinding, the more complete the separation of the ash-bearing parts. The oily flammable liquid used to wet the carbonaceous particles is taken in the amount of two weight parts per five parts of the carbonaceous substance contained in the material to be processed, and this gives a current weight of between 5 and 10 ° C water, but maybe also use smaller amounts of flammable liquid in order to obtain a dense consistency of the combustible mixture, somewhat similar to the consistency of lime mortar, so that it can be taken with a shovel.

The implementation of the proposed method may be performed using the apparatus shown in the drawing in a vertical section. The apparatus consists of a tank A, equipped with a stirrer in the lower part, the blades D of which are mounted on a vertical centrally located axis E, which receives rotation from the drive, tube B with a regulating valve C to inject into the tank a combustible oily liquid, chute / attached to the outside of the walls tank in the upper part and serving for the descent of the wash water.

overflowing through the walls of tank A, pipe G with a tap G for supplying washing water and two drain pipes Y for washing water and c for removing impurities. The crushed material to be processed is placed in a tank and stirred with a mixer D in water. Water with suspended particles of material flows through the pipe B of the oily flammable liquid, the mixture is agitated until a suspension of carbonaceous particles is formed, the impurities are removed, then the resulting oily suspension is washed with water coming through pipe F and removed through pipe J.

The subject of the patent.

1. A method for separating carbonaceous combustible materials from mineral impurities by stirring water and mineral oils in a mixture, characterized in that finely pulverized carbonaceous fuel and a water-immiscible liquid, which has a selective ability to predominantly wet carbonaceous particles, is agitated before forming a coal suspension in oil with the subsequent release of the fluid previously mixed in with coal, and with the removal of coarse impurities.

2. Accepting the process of claim 1, characterized in that the finely pulverized coal is agitated with water to form a slurry and then a liquid is added to this slurry, which is capable of predominantly wetting the coal particles, followed by stirring both liquids in order to form mixtures containing predominantly carbonaceous matter and flammable liquid and freed from water and mineral impurities.

3. Acceptance of the method specified in paragraphs 1 and 2, characterized in that the coal to be cleaned is pre-ground to a fineness sufficient to separate the mineral inclusion from the carbonaceous substance.

4. Acceptance of the method specified in paragraphs 1, 2, 3, characterized by the use of a combustible liquid in an amount sufficient only to form a non-flowing mixture with carbonaceous particles, free from water and mineral impurities.