User talk:Dacio100


 * 1) REDIRECT [/news_detail.php?id=11]]in the ancient [[Media:papermaking application]] Relative to one of China's four great inventions of papermaking, the use of sulfate and charcoal in ancient Egypt, heating, chemical synthesis of sodium sulphide used in papermaking technology, also after a very long history of 4000 years. sodium sulphide which became the 'pulp delignification'. Nile Falls and the Nile Delta, the formation of the ancient Egyptian civilization. At the time people will make good use of abundant local mineral deposits and the ubiquitous sodium alkali resources as paper additives. Ancient people used this method, more similar to today's alkaline papermaking. Sodium sulfide in this way played an irreplaceable role, as the current chemical-based raw materials, sodium sulphide, is also a very wide range of uses. Glauber's salt mines in Egypt so far worldwide, accounting for a very considerable proportion. Which is made of paper chemicals sulfate sodium sulfide the main raw material. Extraordinarily rich in ancient forest timber resources, to provide more plant material conditions of papermaking fibers. This also makes the ancient people use charcoal and soda lake resources into the system provides a basis for [refining sulfide]. As we all know, the ancient Chinese paper-making in the late Eastern Han Dynasty have been very good towards the development, as the representative of Cai Lun's paper advocating the use of surgery is similar to the Egypt of the alkali sulfate sodium sulfide prepared paper. Cai Lun in the Eastern Han capital Luoyang, summed up the success of previous experience in the pulp and add the sodium hydroxide. This will form a mixture with alkaline ash , sodium sulphide system today would be called the originator of the pulp! This mixture of caustic soda, sodium sulphide method followed has not changed much. Then China's pulp alkaline sodium sulphide method was spread to the ancient country of great food (today Afghanistan) and Damascus (Damascus today) and many countries in Eastern Europe. Witnessed a long history of Chinese civilization.