Roller mill mainly includes disc mill, ring mill, roller mill, Raymond mill, pendulum roller mill, etc. Working principle: materials are crushed under pressure between two rolling surfaces or between rolling grinding body (ball, roller) and a track (plane, ball, disk);Basic structure: mainly composed of grinding track, grinding body, force generation and transmission mechanism, air flow and device for easy replacement;Features: 1. Large processing capacity, easy adjustment of product granularity;2. It is easy to form the whole equipment with dry micro classifier;Application: Dry fine grinding of mineral raw materials with Mohs hardness below 6 in chemical raw materials, non-metallic processing, refractory and other industries.3. The wear-resistant roll surface adopts a nested structure, which can adopt different roll surface patterns and forms for different materials, and is convenient for disassembly and maintenance.4. The wear-resistant roll surface is made of hard alloy with high hardness and strong wear resistance, and the service life of vulnerable parts for processing ordinary materials is up to 20000h.
1. Energy saving: the high pressure roller mill superfine crushing process replaces the traditional crushing grinding process, reducing the comprehensive power consumption by more than 60% and the steel consumption by more than 40%.2. Increase output: the crushing ratio is large, which can crush 40~120mm materials to below - 3mm, and the single machine processing capacity can meet the output of 20 t/h to 1000 t/h.3. Investment saving: the grinding roll surface has high hardness, strong wear resistance, hard alloy steel materials, service life of up to 20000h, small equipment area, and low civil construction investment.4. Simple environmental protection: the equipment runs with low noise, less dust pollution, smooth roller operation, operation rate of more than 95%, online maintenance and simple operation.5. Wide application: the process system is flexibly configured, and the material processing adaptability is strong, which is conducive to the development of large-scale, automated and energy-efficient mineral processing.
1. During the use of the mill, there should be fixed personnel to take care of it. The operators must have a certain level of technology. Before the installation of the mill, the operators must receive technical training to understand the principle and performance of the mill and be familiar with the operating procedures.2. In order to make the mill work normally, the "safe operation system for maintenance" should be formulated to ensure the long-term safe operation of the mill
China Electronics Import and Export Corporation is entrusted by Beijing Printing College to conduct domestic public bidding for the project of "Beijing Printing College's Government Procurement of Teaching and Scientific Research Equipment".1、 Project name: Government Procurement Project of Teaching and Scientific Research Equipment of Beijing Printing College II. Bidding No.: 0714 - EMTC - 2851 {TodayHot} III. Bidding
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a) What are the lightning protection measures?Because of the different infringement channels of direct lightning, lightning induced lightning and lightning electromagnetic pulse, there are conduction lightning, induction lightning and electromagnetic pulse effects in addition to direct lightning, followed by the poor shielding of the protected system, that is, voltage difference. The voltage is like water pressure, only when
In engineering construction, problems such as large expansion of pipeline, high temperature and strong pressure area are often encountered.In building water supply and drainage works, the foundation concrete pouring or embedded pipes are subject to building foundation settlement, equipment resonance, geological changes, and pipe medium changes
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