Treatment and effect evaluation of cement dust in

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Dust control and effect evaluation of workplaces (cementing cement) - overview before treatment (2)

cementing cement is made of ordinary silicic acid. The company will build a new LEGO sustainable development material center in the headquarters. Salt cement is used as the base material, and various admixtures such as accelerator or retarder, water loss agent, drag reducer, early strength agent, activator, etc. and admixtures such as quartz sand, ordinary sand, etc. are added in a certain proportion, To change the performance of cement slurry to meet the needs of on-site cementing production. The hydraulic parts of the cementing cement processing process are as follows: bulk cement is transported back from the cement plant by the transport tanker, pressed into the vertical cement storage tank by the gas compressor, and then the cement is transported from the cement plant by the ash tanker φ Pour the 3000mm cement tank into the finished product tank. When cementing, put the cement into the open tank cover ash tanker and transport it to the well pad, then add additives and admixtures to the well pad for wet mixing, and inject mud into the circular well wall for cementing. The process flow is: cement → storage tank → finished product tank → charging transport vehicle → mixing → cementing. The production process is semi mechanized, and the labor intensity of workers is high. Except for transportation, other processes are manual

the average dust concentration in the workplace is 49.91mg/m3, up to 284.50 mg/m3; Composite insights in India predicts that A350 aircraft will become the main driving force for the significant growth of composites in the next few years. The average content of free SiO2 in dust is 14.84%; The dust particle size is small, and the dispersion measurement results show that it is less than 5 μ The point of M is 86.443% when the electronic stepless speed regulation adjusts the lifting speed

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