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Study on the control of high ore pass dust pollution by pre-injection foam dedusting technology in the ore bin

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Abstract

The impact airflow generated by ore unloading in the chute raises the dust carried by the ore itself and the floating dust, and then, the dust raised enters the roadway with the airflow and pollutes the environment. In order to minimize the amount of dust entering the roadway and reduce the pollution of unloading dust, we conducted an experimental study of selection of best foam formula and pre-injection foam dust dedusting technology in ore bin. It was found that the optimal foaming formula was 1.0% sodium dodecyl benzene sulfonate (SDBS) + 0.5% sodium dodecyl sulfate (SDS) + (0.2 ~ 0.4%) sodium carboxymethyl cellulose CMC-Na and coconut oil monoethanolamide (CMEA) by the compound experiment using two evaluation criteria of initial foaming amount and foam defoaming rate. When the air pressure is 0.7 MPa, the foaming rate of the foam generator is proportional to the gas and liquid flow rate and the best foaming gas and liquid flow ratio is 27.8. Under this circumstance, the foaming rate of the foaming formula is 500 l/min. When the height of foam is controlled at 15 cm, the effect of foam dust removal is the best. The dust emission rate from the foam to the fourth level can reach 60%, and the dust fall rate of the third level is 28%, which effectively reduces the dust production and relieves the pressure of the spray hole dust fall at the wellhead.

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Data availability

The data used to support the findings of this study are available from the corresponding author upon request.

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Funding

This work was supported by Natural Science Foundation of China (51874016).

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Authors and Affiliations

  1. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Fabin Zeng & Zhongan Jiang

  2. Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing, 100083, China

    Fabin Zeng & Zhongan Jiang

  3. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

    Yapeng Wang

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  1. Fabin Zeng
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  2. Zhongan Jiang
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Contributions

Fabin Zeng: writing — original draft, conceptualization, and methodology. Professor Zhongan Jiang: supervision, funding acquisition, writing — review and editing. Yapeng Wang: writing — original draft and investigation.

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Correspondence to Fabin Zeng.

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Zeng, F., Jiang, Z. & Wang, Y. Study on the control of high ore pass dust pollution by pre-injection foam dedusting technology in the ore bin. Environ Sci Pollut Res 30, 606–621 (2023). https://doi.org/10.1007/s11356-022-22164-z

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