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Raymond Mill

Max Feeding 15-25(mm)
Discharge Opening 0.005-0.613(mm)
Capacity 0.28-12(t/h)

Introduction

Raymond mill is to grind non-flammable and non-explosive materials in the fields of building materials, mining, metallurgies and chemical industry with hardness less than 9.3 in Moh’s scale and humidity less than 6 percent. Examples of the materials are: quartz, feldspar, barite, fluorite, dolomite, garnet, bauxite, zircon, marble, calcite, iron ore, rock phosphate, coal, slag and so on(400 kinds of material). The granularity of the final products can be changed from 30 to 425 meshes

 

Applications:

Raymond mill is effective closed-circuit high fineness powder manufacturing equipment, which is applicated in small and medium mining, silicate and chemical, building-material, metallurgy, refractory material, pharmaceuticals and lime industry. It is a new style powder grinding machine, which is more advanced than ball grinder and much appreciated in many fields due to its domestic leading level in each technical specification.


Raw Material: 

Gypsum, talc, calcite, limePowder, marble, barite, dolomite, granite, kaolin, bauxite, fly ash , oxidation iron oxide red, iron Powder, etc.

Advantages:

ž   Strong systematicness and high passing rate

The whole machine is a three-dimensional structure with small floor area and strong systematicness. It can form an independent production system from raw material rough processing, conveying, milling to final packaging. The fineness of the finished powder is uniform, and the screening rate is as high as 99%.

ž   Stable transmission, high wear resistance

The transmission device of the machine adopts sealed gear box and belt wheel, with stable transmission and reliable operation. The core parts are made of high-performance wear-resistant materials, with high wear resistance and cost saving.

ž   Long replacement cycle of grinding roller and ring

The roller of Raymond mill is pressed tightly on the grinding ring under the action of centrifugal force, so when the roller and ring are worn to a certain thickness, the output and fineness of the finished product will not be affected, and the replacement cycle of the roller and ring is long, so as to eliminate the short-term defects of the replacement cycle of the vulnerable parts of the centrifugal mill.

ž   Easy to operate and maintain


Working principle
The whole machine is collocated with jaw crusher, elevator, hopper, electromagnetic vibrating feeder, main unit, classifier, collector, cloth deduster and high-pressure blower.
 


The working principle is as follows: load the stuff for grinding evenly and continuously into the grinding chamber of the main frame. Due to the centrifugal force in rotation, the roller swings go outward and presses closely upon the ring. The shovel carries the stuff to the space between the roller and ring. When the roller rolls, the stuff is thus grinded. After being grinded, the stuff is to be routed to the classifier along wind belt of the blower and the rough powder will be put back to the grinder for regrinding.
The fine powder flows into the cyclone collector together with air flow and is expelled from the powder output pipe as product. In the grinding chamber, since the stuff contains moisture to some extent, the heat generated during grinding makes the moisture evaporate; since the pipeline joints are not airtight, the external air is sucked in and the circulation air mass increases. In order to enable the grinder to work in negative pressure, the increased air flow is guided to the deuster and sequentially to the atmosphere after purification.
 

Features:


1. Higher output. Its output increases by 10%-20% comparing with Raymond mill under the same power condition.

2. Larger range of final fineness. Size of final product can be 0.613mm (30mesh) –0.033mm (425mesh). Some can reach the fineness of 0.013mm (1000 mesh).

3.Good dust control. High Pressure Suspension Mill meets the requirement of national dust-dump standard.

4.Easy to operate. The whole system is combined by some independent systems, and the cohesion between the systems is good.

5. Excellent sealing. The multi-class seals are adopted to keep the grinding equipment tight closed.

 

Technical Data:

Type Roller Max. feeding size(mm) Fineness of product(mm) Output (t/h) Power of machine(KW) Size(mm)
No. Dimension(mm) Height(mm)
YGM7815 3 260 150 15-20 0.025-0.005 0.28-3 18.5 4300*3500*5100
YGM8314 3 270 140 15-20 0.025-0.005 0.35-3.4 22 5300*4100*5200
YGM9517 4 310 170 15-25 0.025-0.005 1.5-6.5 37 7100*5900*7900
YGM4121 5 410 210 15-25 0.613-0.044 3-12 75 7850*8000*9700

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