Injection of pulverulent materials by pneumatic means

Details Injection of pulverulent materials by pneumatic means Injection of pulverulent materials by pneumatic means

C - Chemistry, Metallurgy

21

B

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C21B 7/18 (2006.01) B65G 53/66 (2006.01) C21B 5/00 (2006.01) C21B 7/20 (2006.01) F27B 1/20 (2006.01)

Patent

CA 1263530

A B S T R A C T Process and installation for injection of proportioned quantities of pulverulent materials by pneumatic means into an enclosure under pressure and application thereof to a shaft furnace There is provided a process for the injection of metered quantities of pulverulent materials by pneumatic means and at a plurality of different points into an enclosure which is under variable pressure, through pneumatic channels fed with pulverulent material and carrier fluid under pressure supplied by a booster. The process comprises the steps of depositing in each transport pulverulent material in a proportioning hopper into which the pulverulent material is introduced at pressure P1, extracting the pulverulent material by means of a current of gas at a pressure P2 lower than P1, continuously measuring the pressure difference .DELTA.p = P1 - P2 and setting the pressure P at a level which ensures that the pressure difference .DELTA.p will correspond to a certain quantity of pulverulent material transported per unit of time by the carrier gas at a pressure P2.

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