Powder concentrator for producing calcium carbonate powder

Abstract

The invention provides a powder concentrator for producing calcium carbonate powder, and belongs to the technical field of calcium carbonate powder production equipment. The powder concentrator comprises a plurality of sorting mechanisms which are connected in series, each sorting mechanism comprises a sorting cylinder, a feeding hopper, a thick discharging pipe and a thin discharging pipe, a rotating cylinder is rotatably connected into each sorting cylinder, and two shielding and filtering structures are arranged outside each rotating cylinder. Each shielding and filtering structure comprises an arc-shaped shielding sheet close to the inner wall of the sorting cylinder, a connecting rod connected with the shielding sheet and the outer wall of the rotating cylinder and a mounting frame arranged in a material cavity in the radial direction, a plurality of telescopic assemblies are arranged between the mounting frame and the connecting rod, a filter screen is arranged in the middle of the mounting frame, and a driving cylinder is rotatably connected into the rotating cylinder. The driving cylinder is connected with a driving motor. The series connection mode of the multiple sortingmechanisms is that the thin discharging pipe of one sorting mechanism is connected with the feeding hopper (21) of the sorting mechanism behind the thin discharging pipe. The powder concentrator has the advantages that sorting of the calcium carbonate powder with different finenesses can be completed online and continuously and the like.

Description

technical field [0001] The invention belongs to the technical field of calcium carbonate powder production equipment, and relates to a powder separator for calcium carbonate powder production. Background technique [0002] Calcium carbonate powder is ore (CaCO 3 ) through mechanical crushing, sorting and other processes to obtain a heavy calcium powder with a certain whiteness and fineness, which is widely used in power plant desulfurization, glass fiber, citric acid industry, construction, calcium plastic products, ceramics, chemical fiber carpets, waterproof materials , Feed, food, interior and exterior wall putty powder and other products as fillers. [0003] In the production process, it is very important to sort calcium carbonate powders of different fineness. The sorting can collect products of different specifications. On the other hand, it is necessary to sort the powder that does not meet the requirements and return to the crushing mechanism. After crushing again,...

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Problems solved by technology

[0003] In the production process, it is very important to sort calcium carbonate powders of different fineness. The sorting can collect products of different specifications. On the other hand, it is necessary to sort the powder that does not meet the requirements and return to the crushing mechanism. After crushing again, it enters the powder classifier for sorting. In the prior art, only one particle size of powder can be selected in one process, that is, the powder that does not meet the fineness requirements is removed through the filter structure and returned to the crushing mechanism. This method not only The efficiency is low, and the process is cumbersome, the corresponding equipment and the hoist required are greatly increased, and the dust removal work in the workshop is also increased; moreover, the existing filter structure (especially the strict selection of powder with a certain fineness time) is easy to block, requires frequent maintenance, and affects the quality of sorting and continuous production

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