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About
Kunming Donghou Science and Technology Development Co., Ltd. is one of the largest titanium dioxide manufacturers in Yunnan Province, producing titanium dioxide by sulfuric acid method. It is a modern enterprise integrating scientific research, production, sales and service.
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Products
The company's carefully crafted R-251 rutile titanium dioxide boasts excellent properties such as easy dispersion, high whiteness, high brightness, strong hiding power, and high weather resistance.
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Party Branch
Since its establishment, the company has established a new development concept, committed to developing high-tech and manufacturing high-end products. It is committed to green and environmental protection and safe, green development.
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Blog
Based on extensive absorption of advanced domestic and international production processes and management experience, a large number of technological innovations and technological transformations have been carried out
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Recruitment
Currently, the company has more than 500 employees, including 25 senior and intermediate engineers, and more than 100 employees with a junior college degree or above.
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Contact
The company adheres to the business philosophy of "customer satisfaction and respect for cooperation", and takes "quality first and honesty" as its service tenet. It uses technological innovation to promote the sustainable development of the enterprise
Ingenious manufacturing, creating the future
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Ferrous sulfate
This light green inorganic substance, also known as green vitriol, exists as a heptahydrate, ferrous sulfate heptahydrate, at room temperature. It is easily soluble in water, slightly soluble in alcohol, and insoluble in ethanol.
Keywords:
Kunming Donhao
Donhao Technology
Titanium dioxide
Rutile type
Belongs to category:
Iron(II) sulfate:
This light green inorganic substance, also known as green vitriol, exists as a heptahydrate at room temperature, namely ferrous sulfate heptahydrate. It is easily soluble in water, slightly soluble in alcohol, and insoluble in ethanol.
Multiple uses of ferrous sulfate:
1. Ferrous sulfate plays a crucial role in water purification, especially in removing phosphates from urban and industrial wastewater, effectively preventing eutrophication.
①. Due to its strong reducing properties, ferrous sulfate can reduce hexavalent chromium in chromium wastewater from electroplating plants to trivalent chromium, and it can also undergo displacement reactions with many heavy metal ions in wastewater.
②. As a flocculant, ferrous sulfate has excellent sedimentation speed, large sludge particles, small sludge volume, and dense characteristics. It exhibits excellent decolorization effects, especially in treating wastewater from the printing and dyeing and textile industries.
③. Ferrous sulfate can also react with substances such as sulfides and phosphates to form water-insoluble precipitates, thereby effectively removing these pollutants.
2. Application as a colorant
①. Ferrous sulfate is an important component in the production of iron gall ink and other inks.
②. In wood dyeing, ferrous sulfate is also included in mordants to enhance the dyeing effect.
③. When dyeing concrete, ferrous sulfate can dye it a yellowish rust color, adding aesthetic appeal.
④. In the woodworking industry, ferrous sulfate is used to give maple wood a unique silvery color.
3. Role as a reducing agent in the printing and dyeing industry
In indigo dyeing, ferrous sulfate acts as a reducing agent, reducing indigo dye to leuco indigo, achieving the dyeing effect.
4. Raw material for the manufacture of inorganic pigments and catalysts
Ferrous sulfate is an important raw material for the production of magnetic iron oxide, iron oxide red, and iron blue inorganic pigments, and it is also a raw material for iron catalysts and polyferric sulfate.
5. Reduction of chromates in cement
Ferrous sulfate can be used as a reducing agent to effectively reduce chromates in cement, improving cement performance.
6. Agricultural uses
Agricultural ferrous sulfate can kill moss in horticulture and can also be used as a component of fertilizers, pesticides, and herbicides.
7. Feed-grade applications
Feed-grade ferrous sulfate is used as an iron supplement in feed processing to promote animal growth.
8. Protective layer formation
When ferrous sulfate comes into contact with brass turbine condensers, a corrosion-resistant protective layer is formed on the inner tube surface, enhancing the durability of the equipment.
9. Wood preservation
Ferrous sulfate can also be used as a wood preservative to extend the service life of wood.
10. Photographic and chromatographic analysis applications
In addition, ferrous sulfate can also be used in photographic developers and chromatographic analysis reagents, playing a unique role.
Ferrous sulfate can also be used in the production of battery-grade iron phosphate, cathode materials for power batteries, and in environmental protection and resource recycling fields, such as water treatment agents, iron oxide, and industrial pigments.
Application Cases
Water treatment
Chemical Industry
Agriculture
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Company Address
Beiying Village Committee, Yongding Street Office, Fumin County, Kunming City, Yunnan Province
Contact Number
0871-68832208
Enterprise Email
kmdhkj@yeah.net
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