Introduction of bentonite
Bentonite is an important non-metallic mineral, with characteristics of adsorption, expansion and pulping. Its main component is montmorillonite. With continuous progress of science and technology, the application fields of bentonite are continuously widened, and the market’s requirements for its performance and quality are constantly increasing, so the technical research on bentonite is continuously deepened and new technology are constantly emerging. Modified bentonite can improve the performance of traditional bentonite and enhance certain characteristics of traditional bentonite. It is an important direction for the diversified and high-end development of the bentonite industry.
Distribution of modified bentonite and domestic reserves
Modified bentonite is to improve performance of bentonite with bentonite as raw material. Globally, bentonite resources are mainly distributed in China, the United States, Canada, Mexico, Brazil, India, and Japan. China has abundant bentonite reserves. The proven reserves rank first in the world. There are mineral deposits in most areas of our country, mainly concentrated in Xinjiang, Guangxi and Inner Mongolia. In recent years, with annual output of bentonite maintaining at about 5.6 million tons, China has become the world’s largest producer of bentonite, which provides sufficient raw materials for domestic development of modified bentonite industry.
Modification methods of bentonite
The common production methods of modified bentonite mainly include activation modification method and modifier modification method. The activation modification method includes thermal activation method, acid activation method, hydrogen activation method and salt activation method, among which, the first two methods are more widely used; The modifier modification method can use inorganic modifier, organic modifier and composite modifier for modification. Modified bentonite can improve some properties of bentonite, for example, improve its adsorption property, which can accordingly improve its efficiency, enhance its application value, and then expand its application range and demand scale.
Application of bentonite
Modified bentonite can be widely used in fields of paper-making, textile printing and dyeing, plastics and environmental protection.
Application of modified bentonite in the field of paper-making
In the field of paper-making, coating bentonite with large specific surface area, excellent dispersibility, high whiteness and high purity can be used as a multifunctional white mineral filler for paper and can reduce the water permeability of paper.
Application of bentonite in the field of textile printing and dyeing
In the field of textile printing and dyeing, modified bentonite can be used in the production of sizing agents and dyes. It plays the role of dispersion, stabilization, and adhesion during sizing and coloring, which can improve the quality and production efficiency of sizing and dyeing.
Application of modified bentonite in the field of plastics
In the field of plastics, modified bentonite can be used as a filler to modify resins.
Application of bentonite in the field of environmental protection
In the field of environmental protection, coating bentonite can be used in wastewater and exhaust gas treatment to adsorb pollutants such as heavy metal ions, oil stains, and tar.
At present, the demand for high-performance bentonite in many industries is continuously increasing, and modified bentonite has a good development prospect. So how to improve the utilization efficiency of bentonite? In terms of preparation and production, appropriate grinding/crushing and classification/classifying equipment is essential, and a modification equipment/surface treatment/surface coating for improving and expending the performance of bentonite is particularly important. The powder machinery produced by Qingdao Epic Powder Machinery Co., Ltd. can meet a series of requirements for bentonite, from grinding/crushing and classification/classifying to coating/modification/ improving performance, and is your ideal choice.
