Titanium Dioxide is an important inorganic chemical pigment with the main component is titanium dioxide. The production process of titanium dioxide has two process routes: sulfuric acid method and chloride method. It is important in the industries such as coatings, ink, paper, plastic rubber, chemical fiber, and ceramics.


Chemical properties:

White amorphous powder, odorless, tasteless. Insoluble in water, hydrochloric acid, dilute sulfuric acid, ethanol and other organic solvents, slowly soluble in hydrofluoric acid and hot concentrated sulfuric acid.

Production Process:

There are two ways to make titanium dioxide: sulphate process and chloride process. 56% of them are chloride products, and more than 70%of this product is produced in titanium dioxide plants such as DuPont. Other countries, including Chinese titanium pink factories, are still mainly sulfuric acid.

1) Sulfuric acid method

The titanium powder and concentrated sulfuric acid react to produce sulfenic acid titanium titanium, and the titanium acid is generated by hydrolyzed, and then the titanium dioxide is obtained by burning and crushing. This method can produce sharp titanium type and golden red stone titanium pink. The advantage of sulfuric acid method is that the titanium iron ore and sulfuric acid, which are low -priced, is more mature, simple in equipment, and the equipment is easy to solve. The disadvantage is that the process is long, and it can only be based on intermittent operations. Wet operations, high sulfuric acid, water consumption, waste and by -products, and large environmental pollution.

2) Chloride method

The chloride method uses titanium -containing raw materials to react tetrachloride with chloride high titanium residue, or artificial gold red stone, or natural golden erythema, etc., and then purify the gas phase, and then oxidize the gas phase. TiO2 is separated by qi solid separation. The TIO2 needs to be removed for heating or steaming due to a certain amount of chlorine. This process is simple, but at 1000 ° C or higher conditions, there are many chemical engineering problems such as chlorine, chloride, and tetraonate titanium chloride. high. The production of chloride is continuous production. The production of the operation of the production device is not elastic. It is not easy to adjust the parking and production load. In addition, there is no sintering formed by the firing process, and its TIO2 original particles are easy to solve, so people are accustomed to considering that the quality of chloride titanium pink products is better. The advantages of chloride chloride are that the process is short, the production capacity is easy to expand, the degree of continuous automation is high, the energy consumption is relatively low, and the “three wastes” are small, which can get high -quality products. Its disadvantages are large investment, complex equipment structure, high requirements for materials, high temperature resistance, corrosion resistance, difficulty in maintenance, and difficult research and development.

Application field:

The main application areas of titanium dioxide: coatings, plastics, ink, paper, which coating accounted for 60%, plastic accounted for 20%, paper accounted for 14%, other (including cosmetics, chemical fiber, electronics, ceramics, enamel, welding rod, alloy, glass and other fields) accounted for 6%.

Titanium dioxide in the rubber industry as a colorant, and has the role of reinforcing, anti-aging, filling. In white and color rubber products to add titanium dioxide, in sunlight, sun resistance, no cracking, no discoloration, high elongation and acid and alkali resistance. Rubber with titanium dioxide, mainly used in automobile tires and rubber shoes, rubber floor, gloves, sports equipment, generally anatase type. But used in automobile tire production, often add a certain amount of rutile type products, in order to enhance the anti ozone and anti ultraviolet ability.

Titanium dioxide is also widely used in cosmetics. Because titanium dioxide is non-toxic, far superior to lead white, almost all kinds of fragrance with titanium dioxide to replace lead white and zinc white. Fragrance only add 5%-8% titanium dioxide can get permanent white, make spices more slippery, adhesion, absorption and covering power. Titanium dioxide in gouache and cold cream can reduce the feeling of greasy and transparent. Titanium dioxide can also be used in a variety of other spices, sunscreens, saponins, white soaps and toothpastes.

一、Cosmetic grade titanium dioxide is divided into oil-based and water-based titanium dioxide. Due to its stable chemical properties, high refractive index, high opacity, high hiding power, good whiteness, and non-toxic, it is widely used in the field of cosmetics, beauty and whitening effect.

1) Performance characteristics:

1. High whiteness and strong covering power.

2. Hydrophilic, oil-philic products it overcomes the general titanium dioxide in the respective dispersion system is not easy to disperse, easy to precipitate and other defects, significantly improve its dispersion and precipitation resistance, make your product more stable and satisfied.

3. Strong weather resistance.

4. Good compatibility with other ingredients of cosmetics.

2) Use:

Titanium dioxide is considered to be one of the best white pigments in the world, widely used in coatings, plastics, paper, printing ink, chemical fiber, rubber, cosmetics and other industries.

Titanium dioxide (titanium dioxide) chemical stability, in general and most substances do not react. There are three types of titanium dioxide crystals found in nature: plate titanium, anatase and rutile. Plate titanium type is unstable crystal type, no industrial use value, Anatase type (A) for short, and Rutile type (R) for short, have a stable lattice, is an important white pigment and porcelain glaze, compared with other white pigments have superior whiteness, coloring power, covering power, weather resistance, heat resistance, and chemical stability, Especially not toxic.

Titanium dioxide is widely used in coating, plastic, rubber, ink, paper, chemical fiber, ceramics, daily chemical, medicine, food and other industries.

1. The paint industry is the largest user of titanium dioxide, especially rutile titanium dioxide, most of which is consumed by the paint industry. The paint made of titanium dioxide, bright color, high hiding power, coloring power, consumption province, variety, the stability of the medium can play a protective role, and can enhance the mechanical strength and adhesion of the paint film, prevent cracks, prevent ultraviolet light and water through, prolong the life of the paint film.

2 plastic industry is the second largest user, adding titanium dioxide in plastic, can improve the heat resistance, light resistance, weather resistance of plastic products, the physical and chemical properties of plastic products are improved, enhance the mechanical strength of products, extend the service life.

3 Paper industry is the third largest user of titanium dioxide, as a paper filler, mainly used in high-grade paper and thin paper. Adding titanium dioxide to the paper can make the paper with good whiteness, good luster, high strength, thin and smooth, printing does not penetrate, light quality. Papermaking titanium dioxide generally uses anatase titanium dioxide without surface treatment, can play the role of fluorescent brightening agent, increase the whiteness of paper. But laminated paper requires the use of surface treated rutile titanium dioxide, in order to meet the requirements of light and heat resistance.

4 titanium dioxide or advanced ink in the indispensable white pigment. The ink containing titanium dioxide is durable and does not change color. It has good surface wettability and is easy to disperse. The ink industry used titanium dioxide rutile type, also anatase type.

5. Textile and chemical fiber industries are another important application area of titanium dioxide. Titanium dioxide in chemical fiber is mainly used as a matting agent. Anatase is generally used because it is softer than gold red. Chemical fiber with titanium dioxide generally do not need surface treatment, but some special varieties in order to reduce the photochemical action of titanium dioxide, to avoid fiber in titanium dioxide photocatalytic degradation, surface treatment is needed.

6. Enamel industry is an important application field of titanium dioxide, enamel grade titanium dioxide with high purity, good whiteness, fresh color, uniform particle size, a strong refractive index and high achromatochroma, with a strong opaceness and opaceness, the coated coating thin, smooth and acid resistance, in the enamel manufacturing process can be mixed evenly with other materials, not caking, easy to melt and other advantages.

7 ceramic industry is also an important application field of titanium dioxide, ceramic titanium dioxide has high purity, uniform particle size, high refractive index, has excellent high temperature resistance, under 1200℃ temperature conditions to maintain 1 hour unchanged ash characteristics. High opacity, thin coating, light weight, widely used in ceramics, architecture, decoration and other materials.

Packing and storage: Packaged with a white woven bag, each bag weighs 25KG net. Loading and unloading should be light to prevent contamination and damage of packaging; Products in transport should be prevented from rain and sun exposure storage. Products shall be classified according to grade and placed in a ventilated and dry place in batches. Contact with products that can react with products shall be strictly prohibited and moisture-proof shall be paid attention to. The stacking height of products shall not exceed 20 layers.


Post time: May-11-2023