Condition responsive control means for use in discharging powder

Details Condition responsive control means for use in discharging powder Condition responsive control means for use in discharging powder

1980-03-12

1981-04-28

Rosenberg, P. D.

Metallurgical apparatus

With control means responsive to sensed condition

With means supplying a treating agent

75 52, C21B 724

Patent

active

042640598

ABSTRACT:
For use in a system for injecting powdered reagent into a pool of molten metal through a lance whose discharge end is submerged in molten metal and to which powdered reagent is conveyed by a flow of carrier gas, sensing means is arranged to derive a signal dependent upon the rate of flow of carrier gas to the lance and after predetermined time delay the signal is applied to control means so as to effect a shut off of the supply of powdered reagent and of the flow of carrier gas and to elevate the lance out of the pool of molten metal whenever the lance becomes clogged on the one hand or ruptured on the other.

REFERENCES:
patent: 3897047 (1975-07-01), Kolb

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