The way of producing needle-shaped wollastonite pow-der has never been released, the key to the matter is to get high enoughlength to width ratio of the particle. With φ 50 mm horizontal disk typejet mill,we carry out a series of experiments, and discover that select-ing reasonable technological operating condition, with the aim of weak-ening colliding pulverizing effect and reinforcing rubbing pulverizingeffect, is helpful to improve effectively the L-W radio.
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