Method of preparing sulphur-containing lead-bearing wastes for further processing intended to obtaining metallic lead
PL322670A3
Method of making disposable filtering and absorbing half-masks
PL322429A1
Method of making filtering and absorbing half-masks
PL321853A1
Method of making disposable filtering and absorbing half-masks
PL321771A1
Filtering and absorbing half-mask
PL320761A1
Method of purifying sulphuric acid solution
PL305622A1
Protective filter
PL162426B1
Removal of impurities, especially of synthetic fibres, from polypropylene product separated from waste lead batteries
PL255704A3
Method of gravitationally separating polypropylene products from used lead-acid battery casings
PL255109A1
Method of sintering dusty zinc oxide
PL255041A1
Method of preparing copper ore slurry for use in metallurgical processes
PL253243A1
Method of sintering crude zinc oxide in a rotary kiln
PL253232A1
Method of hydraulically conveying materials of very differentiated specific density,in particular those containing component particles capable to float over carrier liquid and hydraulic conveying system therefor
PL247043A1
Method of manufacture of crude lead in rotary-rocking furnace
PL245174A1
Method of roasting of sulfate-chloride zinc wastes from chemical industry in rotary kiln
PL244731A1
System for protecting locomotives against restarting in the case of voltage reoccurence in a contact line
PL243707A1
Coil of flat bar conductor
PL239540A1
Method of manufacture of zinc concentrate from spent dry galvanic cells
PL237821A1
Coil sparator for separating from each other solids of different specific densities in a horizontal stream of water
PL237822A1
Method of preparing materials of used storage cell casings for gravitational separation of polyprpylene product therefrom
