SU1533762A1 - Method of grinding material - Google Patents

Abstract

The invention relates to a process for the grinding of elastic-viscous elastic materials and can be used in recycling lines for elastic elastic-viscous materials. The purpose of the invention is to increase productivity with continuous grinding of chlorosulfonated polyethylene. The method of grinding the material involves loading into a container of 1 / 5-1 / 3 volume and exposing it to rotating and stationary knives with an edge in the form of teeth with a rotation speed of 10-40 m / s. The productivity of the process is 13.5-15 kg / h. 1 tab.

Description

The invention relates to technological processes intended for grinding elastic-viscous elastic materials, and can be used in processing lines for waste elastic, elastic-viscous materials.

The purpose of the invention is to increase productivity with continuous grinding of chlorosulfonated polyethylene,.

A material is loaded into the grinding container and is acted upon by rotating and stationary grinding bodies. Both primary and additional knives with a cutting edge in the form of teeth are used as grinding organs, with the rotation of the main knives at a speed of 10-40 m / s and provided capacity load in the range of 1 / 5-1 / 3 volume.

Grinding of elastically viscous chlorosulfopolyethylene is possible only

the impact of serrated cutting edges, which, in contact with the surface of the material, pry granules from it.

The process can only be carried out if there are sufficient inertia forces that promote the best contact of the material with the blades. Therefore, the minimum rotation speed of the blades for the process is 10 m / s. The greatest effect is achieved at a rotational speed of 40 m / s, however, this speed is limiting for the grinding process of an elastic-viscous material, since when it increases, the rotating parts of the grinding apparatus overheat and, as a result, the material melts.

The grinding process occurs continuously when loading the material to be crushed and unloaded the finished product without stopping the grinding devices through

loading and unloading openings. Grinding is feasible when loading containers within 1 / 4-1 / 3 volume. A larger volume of material is difficult to subject to intensive grinding, grinding with a smaller volume is impractical due to the low productivity of the process.

Example 1 In a container of d 24 cm, H 30 cm, 1/8 of a volume of dry HSPA is filled up and crushed at a speed of rotation of the cutting knives of 10 m / s. Process productivity 6 kg HSPE granules per hour

Example 2. In a container of d 24 cm, H 30 cm, 1/8 of a volume of dry HSPA is filled up and crushed at a speed of rotation of the cutting knives of 25 m / s. Process productivity 15 kg HSPE granules in 1 h.

Example ZS V capacity d 24 cm, H 30 fall asleep to 1/3 of the volume pieces of dry HSPA and is subjected to grinding at a speed of rotation of the cutting knives of 40 m / s. Process productivity 24 kg HSPE granules in 1 h.

The effect of capacity loading is given in the table.

The proposed method of grinding chlorosulfonated polyethylene (HSPE provides the possibility of obtaining a uniform particle size distribution

five

Claims (1)

tava resilient-viscous HSPE with a continuous grinding process. Invention Formula The method of grinding material by loading into a container and influencing it with rotating and fixed knives, is characterized in that, in order to increase productivity during continuous grinding of chlorosulfonated polyethylene, loading into the container is carried out on 1 / 5-1 / 3 of the volume and affected by knives with a tooth edge with a rotation speed of 10-40 m / s. 0 13560 25 Occurs 15 ditches jamming of chopping knives 15 13.5 Editor A. Motyl Compiled by O. Samokhina Tehred L. Serdyukova Proofreader S. Cherni Order 7 Circulation 497 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Subscription