首页>
外国专利>
RECLAIMING PULP FROM WASTE PAPERS BY TREATING WITH A SOLUTION OF SODIUM HYDROXIDE, SODIUM CARBONATE, SODIUM OR AMMONIUM BICARBONATE, AND SODIUM BORATE
RECLAIMING PULP FROM WASTE PAPERS BY TREATING WITH A SOLUTION OF SODIUM HYDROXIDE, SODIUM CARBONATE, SODIUM OR AMMONIUM BICARBONATE, AND SODIUM BORATE
展开▼
机译:通过用氢氧化钠,碳酸钠,碳酸氢二钠或铵和硼酸钠溶液处理从废纸中回收纸浆
展开▼
页面导航
摘要
著录项
相似文献
摘要
The reclamation of purified and reusable pulps from various types of waste papers by first shredding the paper into fine pieces, boiling the shredded paper in a chemical solution containing an alkali metal hydroxide, an alkali metal carbonate an alkali metal bicarbonate and sodium borate, water washing the chemicals from the cooked paper and then bleaching the pulp with a chemical bleach at elevated temperature. The chemicals in the solution are believed to react to form sodium borocarbonate as a reactive compound.
展开▼