PL104587B1 - MACHINE FOR CONTINUOUS DEWATERING IN THE PROCESS OF HYDROMECHANICAL AND MECHANICAL PROCESSING OF FLOCKED MULLS - Google Patents

Description

The patent description was published: April 30, 1980 104587 Int. Cl1. B01D33 / 0 B03D 3/06 "CZV iLLNIA Creators of the invention: Zygmunt Skimina, Zbigniew Koszman, Ludwik Spyra, Stanislaw Frysz, Jerzy Peteja, Jerzy Szczypa, Jaroslaw Neczaj-Hruzewicz, Ryszard Sprycha, Wladyslaw Janusz The holder of the patent: "Boleslaw Smialy" Coal Mine, Laziska Górne; University of Maria Curie Sklodowskiej, Lublin (Poland) Continuous dewatering device in a hydromechanical process and mechanical processing of flocked mules The invention relates to a device for continuous dewatering in a hydromechanical and mechanical process treatment of flocculated mules.

It is known from practice and literature (Stanislaw Blaschke "Mechanical processing of minerals" - Section X pp. 398-418, Wydawnictwo Slask, Katowice 1972. "Poradnik Górnika" TomIV, Wydawnictwo Górni¬ czo-Hutnicze, Katowice 1960) using vacuum filters, screens, centrifuges and presses for this purpose.

Vacuum filters are characterized by low efficiency and require the participation of energy-consuming devices accompanying sighs. Their use is further restricted to mussels with a Dahlstrom index below 300. Sifters They are also inefficient and the drainage water contains a good amount of solids. Centrifuges do not provide the possibility of obtaining deep drainage, and the presses, due to the lack of work continuity, are also efficient and cumbersome to use.

Better results with lower inputs are obtained when using spherical flocculated agglomerations sludge according to the method known, inter alia, from the patent description of the Polish People's Republic No. 87479. This method consists in adding a suitable flocculator to the slurry, agglomerating the sediments and separating the formed agglomerates from the water phase. Different devices can be used for this method, but always they must have elements that introduce the flocculated sediment into a rotary motion, e.g. a rotating cylindrical one container, agglomerating elements such as thresholds on the inner part of the cylinder (or a screw, which at the same time, they transport the flocculated sludge to a device separating the agglomerate from the water phase, e.g. to vibration screens of

The main disadvantage of the above-mentioned devices, regardless of their design, is the necessity to transport sludge flocculated and agglomerated sludge to devices separating the water phase, which reduces compactness of the agglomerate and efficiency of the entire process, and deep drainage is not always achieved. Additional the inconvenience is the unnecessary expansion of the drainage facilities.

The aim of the invention is to overcome these drawbacks, i.e. to increase the yield and obtain the product solid with a low water content, firmness sufficient for transport by conveyors at the same time2 104587 using a small amount of low quality flocculant and recovering clean water that can be returned to the liquid circuit home.

According to the assigned task, continuously draining the flocculated silts to obtain the product according to the invention, the flocculated mud is introduced into the closed bottom, an inclined, rotating tube with mesh walls, the internal surface of which is equipped with into the thresholds parallel to its axis, intensifying the mixing process and the screw transporting the mules to the upper one cylinder outlet, from which they pour into the conveyor in the form of a shapeless mass. In the process of transporting slime the mixture is separated into clear water leaking through the sieve holes and shapeless mass gradually wheezing. The size of the holes of the cylinder rotary sieve depends on the size of the formed granules to prevent them from passing outside, while at the same time constantly receiving the water.

It is advantageous for the dewatering process that the size of the openings of the screen increases as the form grows the granules important in the device and the degree of water extraction. In the upper part of the cylinder, adjacent to the to its surface, compressed air blowing nozzles to clean the sieve, which intensifies the process drainage. Forced drainage of water into the container from which it is directed to the circulation of the mother liquid is placed by a flange on the circumference of the rotating cylinder on the inlet side of the mixture. Number of rotations tilt and cylinder inclination depends on the amount of drained silts.

The subject matter of the invention is illustrated in an exemplary embodiment in the drawing in which Fig. 1 shows side view of the dewatering device, Fig. 2 is a longitudinal section of the dehydrator cylinder, and Fig. 3 is a cross section of cross cylinder cut.

As shown in FIGS. 1 and 2, the flocculated mixture is fed through the pipeline 1 to connected centrally with the bottom of the 2 rotating cylinder 3 made of sieve, equipped with internal compartment top with rollers 4 for the mechanical shaping process of granules and a screw 5 for transporting these granules towards the exit of the cylinder. On the side of the mixture inlet, a flange 6 is installed on the cylinder forcing water to flow into the container 7. Nozzles 8 for a compressed air blast are attached to the upper part of the cylinder sieve cleaning air. The mule, dehydrated during transport, is poured out in the form of a product fixed on the conveyor 9.

Claims (1)

1. Claim A device for continuous dewatering in the process of hydromechanical and mechanical treatment of flocculated silts, having a rotating cylinder, provided inside with agglomerating elements, preferably with a shaft shoulder and / or a conveyor screw, characterized in that the cylinder surface 3 is a screen with variable continuously along the sidewall, mesh size, the upper part of which is adjoined by the compressed air nozzles 8. Wash. Typographer. UP PRL, edition 120 + 18 Price: PLN 45 "