As we all know, flotation machines are mainly used for sorting copper, zinc, lead, nickel, gold and other non-ferrous metals, and can also be used for rough selection and selection of ferrous metals and non-metals. How did the ancients perform flotation without the equipment of flotation machines? Today we will talk about the unofficial history of the evolution of "flotation machines".
Technology and intelligence simplify many complicated problems. Human beings are still immature in the face of science. When we lament the progress of science and technology, have we ever thought that the ancients also developed a series of miracles without the help of intelligence.
In Ming Dynasty Li Shizhen's "Compendium of Materia Medica" and other ancient medical works, it is recorded that "wax water" beneficiation: the processing process of replacing ocher and mica (ie hematite) is as follows: Those who are as red as thin clouds on it go."
The book also records the processing process of mica: "For each catty, use one each of dandelion chinensis, purple back tiankui, raw licorice, and rehmannia glutinosa juice, place it in a porcelain pot, and boil it with two 镒 of Tianchi water for seven days and nights. The water is thrown into it and stirred. Those who float like snails will go away, and they will be wiped out three times like this."
A process of recovering gold and silver recorded in the book "Tiangong Kaiwu" is: "Every gold foil sticky object will be scraped and cremated when it is discarded in the future. The bottom is washed and put into the furnace, and there is no difference."
In the 18th century, in ancient Greece and Europe, it was known that gas sticks to solid particles and rises to the water surface, so as to collect minerals with oil and bitumen.
In the 19th century, people mostly used gasification (boiling pulp) or adding acid to react with carbonate minerals to float graphite.
Until 1903, Elmer proposed the mixed oil flotation method, which was considered as the starting point of modern flotation. Subsequently, the flotation process achieved rapid development, and the research and development of flotation equipment began to gradually take shape.
In 1909, Goover T manufactured a multi-groove impeller stirring device for froth flotation.
By the end of World War II in 1945, mechanically agitated flotation cells had become the most widely used type of flotation cell at that time. At that time, a large-scale concentrator used hundreds of flotation cells of about 2 m3, and the construction, management and operation costs were very high.
Compared with foreign countries, our country started late in the research of flotation equipment. It was not until the mid-1950s that it began to imitate the former Soviet Mihanoble flotation machine.
After 1980, with the continuous improvement of flotation theory research and flotation equipment technology, significant progress has been made in the research of large-scale, diversification and automation of flotation equipment at home and abroad.
At this time, taking advantage of the spring breeze of reform and opening up, Bellian mining machinery manufacturers made great strides forward, recognized the road of mining equipment manufacturing and production, and have been working hard to persevere. In addition to flotation machines, a batch of high-quality crushers and Ball Mills have also been produced.
The times are developing and the society is progressing. Today, Bellian still does not forget its original intention and forges ahead. It has been committed to building an excellent brand of mining machinery in China, opening up the future and going to the world!
