Titanium iron powder is subjected to acid hydrolysis reaction with concentrated sulfuric acid to produce titanium oxide sulfate, which is hydrolyzed to form metatitanic acid, and then calcined and crushed to obtain titanium dioxide products. This method can produce rutile and rutile titanium dioxide. The advantage of sulfuric acid method is that it can use low-cost and easily available ilmenite and sulfuric acid as raw materials, with mature technology, simple equipment, and easy solution of anti-corrosion materials. Its disadvantage is that the process is long and can only be operated intermittently. Wet operation consumes high amounts of sulfuric acid and water, resulting in a large amount of ....

Fine chemical engineering is one of the most dynamic emerging fields in today's chemical industry. Fine chemical products have a wide variety of types and applications, directly serving various industries in the national economy and high-tech industries. Compared to basic raw material chemicals, fine chemical products have lower resource consumption, lower energy consumption, higher product added value, and stronger risk resistance.

1. The warehouse storing hazardous chemicals must establish a strict inbound and outbound management system. 2. Before the entry and exit of hazardous chemicals, they should be inspected, registered, and accepted according to the contract, including: a. quantity; b. Packaging; c. Danger signs. Only after verification can the items be stored or released, and they cannot be stored until the nature of the item is clarified.

Buildings storing hazardous chemicals shall not have basements or other underground structures, and their fire resistance rating, number of floors, floor area, safe evacuation, and fire separation distance shall comply with relevant national regulations.