MTW European version grinding mill limestone desulfurizer technology

24/02/2023

The wet limestone-gypsum flue gas desulfurization (FGD) process and the dry calcium injection desulfurization technology inside the boiler are currently widely used technologies for controlling sulfur dioxide emissions. Whether it is post-combustion flue gas wet desulfurization or in-boiler dry calcium injection desulfurization, the medium that absorbs sulfur dioxide is limestone powder. The particle size of limestone powder is one of the important factors affecting the desulfurization efficiency. Limestone powder with a suitable particle size distribution is conducive to the absorption of sulfur dioxide.

As a provider of overall solutions for grinding equipment, Dawn Heavy Industry has always been committed to researching and developing more efficient, energy-saving, and environmentally friendly grinding equipment. The MTW European version grinding mill produced by Dawn Heavy Industry can not only meet the requirements of both in-boiler desulfurization and outside boiler desulfurization using two different particle sizes of limestone desulfurizer powder, but also has low production and construction costs and is environmentally friendly, making it an ideal choice for customers.

The process flow of limestone powder production
The first stage – Raw material conveying stage:
The raw material limestone is unloaded from the forklift or delivery truck into the feeding hopper, and then falls into the belt conveyor for transportation to the hoist. The hoist lifts the material to the limestone storage bin, which helps to evenly feed the material.
The second stage – Grinding and selection stage:
The raw material falls from the storage bin onto the weighing belt conveyor, and after being iron-removed by a self-unloading iron remover, enters the European version mill for grinding. After grinding, the material is sorted by the classifier under the action of air flow, and the qualified product is collected and stored temporarily by the cyclone collector.
The third stage – Finished product storage and transportation stage:
The finished product powder, temporarily stored by the cyclone collector, is transported by the conveying equipment and hoist to the finished product warehouse for storage and reserve, in order to meet the subsequent tank truck loading.

Technical advantages of MTW European version mill in limestone powder production
1.Leading technology
Our product is a nationally patented technology, with four generations of upgrades and improvements, making it mature and stable.
2.Low risk of clogging and high efficiency in powder selection
The use of curved surface arc wind tunnel with internal outlets favorable for material dispersion, reduces the risk of clogging. We also use a new type of frequency-controlled suspended cage powder selection machine, allowing adjustable and controllable fineness of the finished product and greatly improving the efficiency of powder selection.
3.Advanced transmission and stable operation
The conical gear integral transmission has strong power, high efficiency, large output, and low energy consumption. The sinking design allows for stable operation with low vibration and noise.
4.Easy maintenance and low operating costs
The main spindle transmission system and fan transmission system both use rare lubricants with long oil change intervals, less maintenance and lower operating costs.
5.Economical investment and environmentally friendly
The equipment has a small footprint, simple structure, strong system compatibility, low infrastructure cost, short construction period, and quick capital return. The finished product has minimal pollution, high whiteness, and the entire system operates under negative pressure, with no dust spillage, meeting the latest national environmental protection requirements.
6.Comprehensive integrated solution
We provide a comprehensive integrated solution that includes design, supply, construction, and service, providing a worry-free, safe, and reliable experience for our customers!

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