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GB379268A
|
|
Improvements in or relating to refractory materials and to methods of making the same
|
|
US1746945A
|
|
Recovering metals
|
|
US1746944A
|
|
Process of cement manufacture
|
|
DE581575C
|
|
Furnace for burning alkaline earth carbonates
|
|
DE548896C
|
|
Process for burning tiny carbonates of the alkaline earth
|
|
GB269480A
|
|
Improvements in or relating to methods of and apparatus for treating materials
|
|
GB275463A
|
|
Improvements in or relating to the treatment of carbonate materials
|
|
GB264450A
|
|
Improvements in or relating to sintering machines
|
|
US1810313A
|
|
Process of and apparatus for heat treating alkaline earth carbonate and other materials
|
|
GB161491A
|
|
Improvements in and connected with ore sintering mechanisms
|
|
CA280181A
|
|
Heat treating apparatus
|
|
CA281295A
|
|
Earthy mineral processing
|
|
CA284764A
|
|
Earthy material processing
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