juxinde@used-equipments.com +86 13992560725
You are here: Home » News » Roller mill and types

Roller mill and types

Views: 0     Author: Site Editor     Publish Time: 2023-03-30      Origin: Site

Roller mills are mills that use cylindrical rollers, either in pairs or against flat plates, to crush or grind various materials such as grains, ores, gravel, plastics, etc.Drum grain mills are an alternative to traditional grinding stone arrangements in mills.Roller mills for rock complement other types of mills such as ball and hammer mills in industries such as mining and processing of ores and construction aggregates; cement milling; and recycling.

Types Roller mill

Two-roller mills:Two-roller mills are the simplest variety, in which the material is crushed between two rollers before it continues on to its final destination.The spacing between these two rollers can be adjusted by the operator.Thinner spacing usually leads to that material being crushed into smaller pieces.

Four-roller mills:Four-roller mills have two sets of rollers.When using a four-roller mill to mill grain, the grain first goes through rollers with a rather wide gap, which separates the seed from the husk without much damage to the husk, but leaves large grits.Flour is sieved out of the cracked grain, and then the coarse grist and husks are sent through the second set of rollers, which further crush the grist without damaging the crusts.Similarly, there are three-roller mills, in which one of the rollers is used twice.

Five- and six-roller mills:Six-roller mills have three sets of rollers. When using this type of mill on grain, the first set of rollers crush the whole kernel, and its output is divided three ways:Flour immediately is sent out the mill, grits without a husk proceed to the last roller, and husk, possibly still containing parts of the seed, go to the second set of rollers.From the second roller flour is directly output, as are husks and any possible seed still in them, and the husk-free grits are channeled into the last roller.Five-roller mills are six-roller mills in which one of the rollers performs double duty.

Gristmill conversion

In the 19th century, mills were converted into pulverizers before replacing them.The factory uses steel rolls or porcelain rolls.Between 1865 and 1872, the Hungarian milling industry upgraded and expanded the use of stone mills combined with roller mills, a process known as Hungarian high milling.Hungarian durum wheat thus milled was considered integral to the success of the Vienna bakery "first in the world" at the Paris Exposition in 1867.

Other applications

  • Professionally used in the high-yield manufacture of ultra-fine pyrophyllite powder in the glass fiber industry

  • Specially designed for high-yield coal gangue pulverization in the coal industry

  • Specially used in the high-volume production of various chemical raw material powders in the chemical industry.

Working principle

The motor or other prime mover drives the roller hanger to rotate through the V-belt pulley and the center bearing.The rollers suspended by the bearings and the pendulum roll along the inner circle of the roller ring when the hanger rotates.The dust removal fan will generate negative pressure at the inlet and outlet of the grinder to prevent dust and dissipate the heat inside the machine.

Xi'an JUXINDE Metallurgical Equipment Co., Ltd., located in Xi'an, Shaanxi, China, is a professional supplier of second-hand metallurgical equipment.
   No. 60, TIYU Road, Lintong District, Xi'an City, Shaanxi Province
    juxinde@used-equipments.com
  +86 13992560725
Contact us
Copyright © Xi’an Juxin Gangbao Technology Co., Ltd. All Rights Reserved. | sitemap