How to improve the iron removal effect of the external circulation of the slag vertical roller mill

Project Background

The quality of iron removal in the external circulation of the slag vertical roller mill affects the working efficiency of the mill equipment and also affects the quality of the iron powder.

Project Advantages

How to improve the iron removal effect of the external circulation of the slag vertical roller mill

The quality of iron removal in the external circulation of the slag vertical roller mill affects the working efficiency of the mill equipment and also affects the quality of the iron powder. Therefore, the SBM heavy machine also pays special attention to this when researching and improving the slag vertical roller mill. One item. The following is the technical method and analysis of the effect of SBM heavy machine on the iron removal effect of the external circulation of the slag vertical roller mill, for everyone to discuss.

In the research of SBM heavy machine, it was found that because the powder returning material outside the slag vertical roller mill is wet, slag powder always sticks to the stainless steel drum of the magnetic drum during operation, which is equivalent to increasing the distance of the magnetic field and reducing the magnetic force. .

The "herringbone" plate structure under the drum iron remover drum makes the mineral powder aggregate here and affects the smooth passage of iron powder. In the mineral powder aggregate area, when the stainless steel drum rotates counterclockwise, the iron adsorbed by the permanent magnet block of the magnetic drum When the powder is moved to the slag aggregate area with the stainless steel drum, a small part of the iron powder is blocked by the aggregate in the slag aggregate area and falls on the feeding belt. The design requirements are separated into a slag vertical roller mill system, which reduces the efficiency of iron removal.

The main reasons are as follows:

The reason why the iron powder and the ore powder are not cleanly separated, the magnetic drum scraper plate will always scrape a part of the ore powder into the iron powder slide tube when it rotates through the ore powder aggregate area; ~ 70r / min is adjustable, but even if it is adjusted to the designed high speed of 70r / min, the linear speed of the drum is only 130m / min. The linear speed is too low, that is, the relative speed with air is low, which is not conducive to the rapid rejection of the stainless steel drum when it rotates. The ore powder adsorbed on the surface of the drum was dropped, resulting in inclusion of ore powder in the iron powder.

Transformation measures:

After the effect:

After the transformation, the efficiency of iron removal in the external circulation of the slag vertical roller mill has been greatly improved, and it is possible to separate very clean iron powder for more than 6t every 24h. The iron powder can be directly packaged and sold without separation again, and there is no need to worry about the iron powder due to rain. And agglomeration. Since use, the situation is better, and the operation of the modified drum iron remover is also very stable.

The above are the results of the research and experiments conducted by SBM Heavy Machinery on the iron removal effect of the slag vertical roller mill. It hopes to help improve the overall function of the slag vertical roller mill. If you have a better method, please feel free to call Shanghai SBM Heavy Machinery Co., Ltd.

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