The invention belongs to the technical field of foaming agents for underground dust removal of
coal mines, and discloses an environment-friendly
foaming agent for improving the hydrophobic
coal dust collection rate and a preparation method thereof. Aiming at the defects that the existing
petroleum-based
coal dust
foaming agent is poor in biodegradability and insufficient in hydrophobic
coal dust capturing and foam stabilizing capability, the invention provides the
foaming agent. The foaming agent is prepared from an environment-friendly main surfactant, a
cocamidopropyl betaine auxiliary surfactant, a
silane coupling agent modified diatomite foam stabilizer, a
biodegradation aid, a pH
regulator and deionized water according to a ratio. The preparation method comprises the following steps: firstly preparing the modified foam stabilizer, and then performing surface activity premixing, composite
system construction,
pH regulation and post-treatment to obtain a finished product. The foaming agent has the advantages of excellent
environmental protection property, strong hydrophobic
coal dust capturing capability, good foam stability, simple and controllable preparation process and easily available raw materials, is suitable for large-scale coal mine underground production, and can effectively solve the problem of coal mine underground
coal dust treatment.