Red is a very special color. Let's not say that our blood is red. Look at the colors around us. The three primary colors of red, yellow and blue are the basic colors of life. For ceramic pigments, blue is relatively easy to develop. Common Blues include vanadium zirconium blue, cobalt blue, malachite blue and gem blue, Their structural types are zircon, spinel and spinel respectively; Yellow ceramic pigments are relatively rich in products, mainly orange and pure yellow of titanium series; Gold and Tan of iron chromium zinc aluminum series. Praseodymium yellow and wrapped yellow of zircon structure, etc.

According to the use of ceramic pigments, they are roughly divided into two types: glaze and body. Most of the glaze pigments have hair color in the body, but the body pigments do not necessarily have hair color in the glaze. There are mainly varieties of pigments for red ceramic glaze: Zircon iron red, wrapped red, round red, manganese peach red, etc. among them, zircon iron red and wrapped red belong to zircon structure type, which have good hair color in green body and glaze, especially wrapped red. The hair color is bright and the redness value is high. Although the price is high, they are generally used more on glass mosaic, glazed porcelain pieces and artistic porcelain; Zirconium iron red is widely used in matte glazes and porcelain chips because of its relatively low price, matching with other zirconium pigments to color other rich color ranges and good high-temperature performance.

Yuanzi red, also known as tin peach red, belongs to the structure of tin sphene. It is mainly fired from chromium oxide, tin oxide and calcium oxide. The formula of the product is highly confidential, the production process is complex, and the selection of raw materials and process are very particular. At present, it is basically produced well in Chaozhou, Guangdong. It has been said that Chaozhou manufacturers have prepared raw materials and the same raw materials and processes according to the original formula after setting up factories in Foshan, but they can't burn the original effect after coming to Foshan. It is also said that there is attention to the production water. In addition, the introduction method of calcium oxide in the formula is nothing more than calcium bicarbonate or calcium oxide, However, it is said that in Chaozhou area, oyster shells are crushed and then melted with tin oxide ingots in a large pot. The process is both primitive and mysterious. According to the content of chromium oxide and calcium oxide in the formula, Yuanzi red extends the color range from pink to deep purplish red. At present, Yuanzi red products are also used in the production of ceramic pink ink. In addition, glazed tiles are also a large user.

Manganese peach red is not very good in high temperature because it contains manganese carbonate, and it is easy to cause pinholes due to the presence of unreacted manganese carbonate in porcelain chips. Therefore, manganese peach red for glaze is basically used in matte antique brick products.

The red ceramic pigment products used for green body mainly include coral red, ferrosilicon red, yttrium aluminum red, manganese red and so on. The development of aluminum iron red can be said to be a miracle, because this variety is said to have been developed by mistake in an inadvertent experiment. It is also said that the miracle occurred because alumina was mistakenly put into the ball as chemical zirconia when preparing raw meal. Of course, the above statements are legends in the Jianghu, but the first technical peer who made coral red products still makes the author who is also a technician admire very much.

Ferrosilicon red is mainly prepared and calcined by white carbon black and iron oxide red. Its hair color is more bright than ferroaluminum red, and the pink tone is stronger. The natural products include 510B ferrosilicon in France. Because the price of white carbon black is several times higher than that of alumina, aluminum iron red products with low price are basically used in the market.

Manganese red product belongs to corundum combination type, and its high temperature resistance in the green body is general. Due to the low price of alumina and manganese carbonate raw materials, it is also a kind of pink ceramic green body pigment with relatively low price. At present, manganese red products are rarely used in the market, and its market share is relatively objective around 2004. Due to the reduced demand, there are few pigment manufacturers to produce at present, which is basically monopolized by one or two pigment enterprises.