Process for the manufacture of hard ashless charcoal briquettes
Abstract
Abstract A PROCESS FOR THE PREPARATION OF HARD, ASHLESS CHARCOAL BRIQUETTES IS DESCRIBED, IN WHICH A FINELY DIVIDED CARBONACEOUS RAW MATERIAL IS CHARGES INTO AN ELECTROLYTIC CELL CONTAINING AN ELECTROLYTE WITH SULURIC ACID ADDED, THE RAW MATERIAL BEING HELD IN POUROUS CONTAINERS ELECTRICALLY CONNECTED TO AN ELECTRODE OF THE CELL, WHEREBY THE RAW MATERIAL IS CONVERTED TO SUBSTANTIALLY PURE CARBON BY THE REMOVAL OF INORGANIC IMPURITIES IN THE RAW MATERIAL. THE CARBON PRODUCED IN THE ELECTROLYTIC CELL MAY BE REMOVED AND WASHED TO REMOVE SOLUBLE IMPURITIES, DRIED AND COMPRESSED INTO BRIQUETTES AT A PRESSURE OF AT LEAST 200 TONS PER SQUARE INCH AND CURED IN THE PRESENCE OF AN INERT GAS AT A PRESSURE OF AT LEAST 100 TON/IN.2. PREFERABLY THE ABOVE STEPS ARE PRECEDED BY A STEP OF CONVERTING A VEGETABLE CARBON SOURCE TO A FINELY DIVIDED CARBONACEOUS RAW MATERIAL, BY DEHYDRATION IN THE PRESENCE OF 50-100 PERCENT SULFURIC ACID.
Inventors
- 👤 Alberto E Veloso
Bibliographic Details
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