VERFAHREN UND VORRICHTUNG ZUM DIREKTREDUZIEREN VON STUECKIGEN EISENERZEN, PELLETS, AGGLOMERATEN U.DGL.

申请公布号：DE1925662(B2)

申请号：DE19691925662

申请日期：1969.05.20

申请公布日期：1977.12.22

分类号：C21B13/00

主分类号：C21B13/00

摘要：Reduction process employs a reducing gas produced with technically pure oxygen, which is fed into the blast furnace underneath the reduction zone. It is regenerated in circulation and is reintroduced as circulating gas at the lower end of the blast furnace. Continuous current gasification of a solid carbon carrier is effected by adding a hydrogen-producing, gaseous hydrocarbon, pref. methane, and steam.

PREPARATION OF UNSATURATED TERTIARY AMINES

MOULDING METHOD FOR METAL POWDER

PAYYOFF PLATE PASSING DEVICE WITH NORMAL AND REVERSE FEED

PRODUCTION OF SEMICONDUCTOR DEVICE

SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE

METHOD OF PREVENTING IMPURITY DIFFUSION FROM DOPED OXIDE

WINDAGEELOSS DECREASING DEVICE FOR A BODY ROTATING AT A HIGH SPEED

PNEUMATIC PULVERIZER

DUBLE SHEEL TYPE HEAT EXCHANGER

TV SIGNAL GENERATOR AND ITS HANDLING INSTRUCTION

FUEL FLOW METER

THICKNESSSMEASURING DEVICE

Устройство для глажения воротников мужских сорочек

Способ получения антибиотика

METHOD OF PRODUCING COLD AND AN ABSORPTION TYPE REFRIGERATION PLANT PERFORMING THIS METHOD

N*N**DISUBSTITUTED CYCLIC DIAMINE AND PREPARATION METHOD THEREOF

CHEMICAL COMPOUNDS

PRESSING APPARATUS WITH EVACUATING FUNCTION

THERMAL STRESS MITIGATING CONSTRUCTION IN HIGH TEMPERATURE STRUCTURE

HIGH STRENGTH COUPLING