钛白粉的主要成分是TiO2,化学性质稳定，在一般情况下与大部分物质不发生反应。在自然界中二氧化钛有三种结晶：板钛型、锐钛型钛白粉和金红石型钛白粉。板钛型是不稳定的晶型，无工业利用价值，锐钛型钛白粉(Anatase)简称A型，和金红石型钛白粉(Rutile)简称R型，都具有稳定的晶格，是重要的白色颜料和瓷器釉料，与其他白色颜料比较有优越的白度、着色力、遮盖力、耐候性、耐热性、和化学稳定性，特别是没有毒性。

The main ingredient of titanium dioxide is TiO2, which has stable chemical properties and does not react with most substances in general. In nature, titanium dioxide has three kinds of crystals: plate titanium, anatase titanium dioxide and rutile titanium dioxide. The plate titanium type is an unstable crystal type and has no industrial use value. The anatase titanium white powder (Anatase) is referred to as A, and the rutile titanium dioxide (Rutile) is referred to as R. It has a stable lattice. It is an important white pigment and porcelain glaze. It has superior whiteness, coloring force, covering power, weatherability, resistance, and resistance to other white pigments. Heat and chemical stability, especially no toxicity.

钛白粉兼有锌白的持久性和铅白的遮盖性,是高档白色颜料，最大的优点是无毒，在高级化妆品中作为增白剂。其覆盖能力强，折射率高，也用来做高级白色油漆。也可用作高级铜版纸的表面覆盖剂，以及用来生产增白尼龙。陶瓷中加入可以提高陶瓷的耐酸性。钛白还具有半导体性能，以其无毒、价廉、催化活性高的特点，成为多项光催化反应中最常用的半导体材料。还可用作乙醇脱水,脱氢的催化剂。

Titanium dioxide has the durability of zinc white and the covering property of lead white. It is high-grade white pigment. The biggest advantage is non-toxic. It is used as whitening agent in high-grade cosmetics. It has strong coverage ability and high refractive index, and is also used for advanced white paint. It can also be used as a surface coating agent for high-grade coated paper and used to produce whitening nylon. The acid resistance of ceramics can be improved by the addition of ceramic. Titanium dioxide also has semiconductor properties. It is the most commonly used semiconductor material in many photocatalytic reactions due to its non-toxic, inexpensive and high catalytic activity. It can also be used as a catalyst for dehydration and dehydrogenation of ethanol.

目前世界二氧化钛消费量中金红石型占75～80%，锐钛型只占20～25%。既然同属于钛白粉系列这两种钛白粉有什么区别？

At present, the consumption of titanium dioxide in the world accounts for 75 to 80% of rutile and 20 to 25% for anatase. What is the difference between the two titanium dioxide that belong to the titanium dioxide series?

1）内部结构晶体

1) internal structure crystal

钛白粉共有三种不同的晶体结构，即我们常说的金红石型钛白粉、锐钛型钛白粉、板钛型钛白粉，三者晶体结构各不不同，其中金红石型钛白粉晶体结构最为稳定；而板钛型钛白粉则用途非常少，这主要是由于它内部结构晶体的不稳定，因此在自然界就没办法可以长期稳定的保存起来，没有生产使用价值；

There are three different crystal structures, that is, the rutile titanium white powder, the anatase titanium white powder and the plate titanium titanium white powder. The crystal structure of the three is not different. The crystal structure of the rutile titanium white powder is the most stable, while the plate titanium titanium white powder is used very little, mainly because of its internal structure crystal. Therefore, in nature, there is no way to keep it stable for a long time without any production and use value.

由于金红石型产品晶型更趋向六面体，比较锐钛更容易分散均匀，其所形成的团聚物更加均匀。粒径分布更为窄。

Because rutile products are more hexaghedral, the anatase is easier to disperse evenly and the agglomerates are more homogeneous. The particle size distribution is narrower.

2）熔点和沸点

2) melting point and boiling point

由于锐钛型在高温下会转变成金红石型，因此锐钛型二氧化钛的熔点和沸点实际上是不存在的。只有金红石型二氧化钛有熔点和沸点，金红石型二氧化钛的熔点为1850℃、空气中的熔点为(1830±15)℃、富氧中的熔点为1879℃，熔点与二氧化钛的纯度有关。金红石型二氧化钛的沸点为为(3200±300)℃，在此高温下二氧化钛稍有挥发性；

Because anatase will transform into rutile at high temperature, the melting point and boiling point of anatase titanium dioxide do not exist. Only rutile titanium dioxide has melting point and boiling point, the melting point of rutile titanium dioxide is 1850 C, the melting point in the air is (1830 + 15) C, the melting point in oxygen rich is 1879, and the melting point is related to the purity of titanium dioxide. The boiling point of rutile TiO2 is (3200 + 300) C, and the TiO2 is slightly volatile at this high temperature.

3）介电常数

3) dielectric constant

由于二氧化钛的介电常数较高，因此具有优良的电学性能。在测定二氧化钛的某些物理性质时，要考虑二氧化钛晶体的结晶方向。锐钛型二氧化钛的介电常数比较低，只有48。

Because of the high dielectric constant of titanium dioxide, it has excellent electrical properties. When determining some physical properties of titanium dioxide, the direction of crystallization of titanium dioxide should be considered. The dielectric constant of anatase titanium dioxide is relatively low, only 48.

4）电导率

4) electrical conductivity

二氧化钛具有半导体的性能，它的电导率随温度的上升而迅速增加，而且对缺氧也非常敏感。金红石型二氧化钛的介电常数和半导体性质对电子工业非常重要，可利用该性质生产陶瓷电容器等电子元器件。

Titanium dioxide has semiconductor properties. Its conductivity increases rapidly with the increase of temperature and is also sensitive to anoxia. The dielectric constant and semiconducting property of rutile titanium dioxide are very important to the electronics industry, which can be used to produce electronic components such as ceramic capacitors.

5）硬度

5) hardness

按莫氏硬度十分制标度，金红石型二氧化钛为6～6.5，锐钛型二氧化钛为5.5～6.0，因此在化纤消光中为避免磨损喷丝孔而采用锐钛型。

According to the standard degree of moth hardness, the rutile titanium dioxide is 6 to 6.5, and the anatase titanium dioxide is 5.5 ~ 6. Therefore, the anatase type is used to avoid the wear spray holes in the chemical fiber.

6）生产方法

6) production method

虽然金红石与锐钛硫酸法生产的工艺基本类似，但是具体参数存在很大的差别。锐钛产品大多用硫酸法进行生产，但是金红石产品现在有硫酸法与氯化法两种。

Although rutile and anatase sulfuric acid process are basically similar, the specific parameters are quite different. Most of anatase products are produced by sulfuric acid method, but rutile products now have two kinds of sulfuric acid and chlorination methods.

7）包膜

7) coating

锐钛产品基本在煅烧结算，经过雷蒙磨破碎之后进行包装销售，而金红石产品为了更好的提高其分散，耐候等特性，在煅烧后使用氧化铝或者锆进行表面处理，帮随同时的还有进行部分的有机处理。

Anatase products are basically calcined and sold after crushing through Raymond mill. In order to better improve their dispersion and weatherability, the rutile products use alumina or zirconium for surface treatment after calcining, helping with the simultaneous partial organic treatment.

8）价格

8) price

通过生产方式不难看出，金红石型的钛白粉成本比锐钛型的高，售价自然也高，目前来看，金红石型钛白粉售价大约比锐钛型钛白粉高3000-4000元每吨。

It is not difficult to see that the cost of rutile titanium dioxide is higher than that of the anatase, and the price is high. At present, the rutile titanium white powder is about 3000-4000 yuan per ton higher than that of the titanium white powder.

另外，A型二氧化钛白度较好，但着色力仅为R型的70，在耐候性方面加入A型二氧化钛试片仅仅经过一年以后即开始龟裂或者碎片状剥落，而加入R型二氧化钛试片，经过十年以后其外观只有很小变化。由于R型二氧化钛着色力及耐候性较佳，塑料着色使用R型二氧化钛为好。

In addition, the whiteness of A titanium dioxide is better, but the coloring force is only 70 of the R type. In the weather resistance, the A type titanium dioxide test strip begins to crack or shard after only one year, but the appearance of R titanium dioxide is only slightly changed after ten years. Because R type titanium dioxide has better coloring power and weather resistance, it is better to use R type titanium dioxide for plastic coloring.