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Suggestions on the selection of saggars in the production of ceramic colours
Currently in the market sagger products are basically machine pressure sagger, which is divided according to the use of temperature, it can be roughly divided into: low-temperature sagger, medium-temperature sagger, high-temperature sagger. The shape of the sagger is also round, square, rectangular and so on. Sagger material is mainly refractory material containing alumina amount of how much to distinguish. In addition, according to the diameter of the sagger to divide, the main commonly used calibre 16 cm, 18 cm, 26 cm, 30 cm, 32 cm and other conventional calibre, of course, for the calibre of the sagger can be asked to manufacturers according to the needs of customers to customize. Sagger side mouth part is also common 3 shapes, such as thickened side mouth, open side mouth, regular side mouth, thickened side mouth with buckle and so on, also can be customised according to the manufacturer’s process requirements.
The sagger produced by Gotrays, specialising in lithium battery industry, the new material cathode material lithium iron phosphate, lithium nickel cobalt cobalt, ternary materials, sodium batteries and so on. It is with low expansion, resistance to strong alkali erosion, has a high service life. In order to further improve the erosion resistance of the sagger, Gotrays developed a multi-model composite sagger, the use of good results!
Ceramic pigment production sagger selection is broadly divided into three categories:
(1) glaze with high temperature sagger
This type of sagger can usually withstand high temperatures below 1300 ℃ calcination, the main use of the product range is relatively large, the disadvantage is the high price. General use 5 ~ 8 times after the cracks will begin to appear, especially vanadium-zirconium yellow, part of the cobalt blue, antimony tin grey and other calcination temperature between 1270 ~ 1300 ℃, the product specific gravity is larger, for high-temperature sagger quality requirements are higher. This type of sagger generally use conventional calibre 28 ~ 30 cm or so, the edge of the mouth of conventional or thickened can be.
(2) high-temperature sagger
This type of sagger is used in the widest range, the use of temperature between 1000 ~ 1200 ℃, and the price is moderate. Most of the glaze pigment and part of the high-temperature billet pigment using this type of sagger is most practical. Such as glaze pigments of brown, black, cobalt blue and other products usually use this type of sagger, especially the formula for the use of mineralising agents such as boric acid pigment products for the sagger corrosion is also quite serious, the use of high quality high-temperature sagger can significantly reduce the risk of inverted kiln. Part of the production of high-grade blanks black manufacturers also use 32 cm calibre thickened buckle sagger. Titanium yellow products are also used in this type of sagger, the side of the mouth to choose the thickened side of the open hole.
(3) low-temperature sagger
Most of the tunnel kiln production billet colours are selected such sagger, relatively low cost, the use of temperature is mainly concentrated in the 700 ~ 1100 ℃, the frequency of use between 7 ~ 10 times. Frequent use of more than 1100 ℃ will accelerate the production of cracks. Selection of the calibre of some manufacturers can be achieved 34 cm, mainly used in the body of the black, brown, coral red and other products. It should be noted that there is a low-temperature sagger is mainly used in the production of zirconium pigments, calibre is generally 26 ~ 28 cm, using thickened edges and to the inverted buckle. Zirconium pigment such as vanadium zirconium blue temperature in 800 ~ 870 ℃, praseodymium yellow 930 ~ 980 ℃, zirconium iron red 1020 ~ 1080 ℃. Due to the zirconium pigment mineralizer use more and have gasification effect class small material, therefore, the use of high-quality low-temperature thickened sagger, can improve the product colour saturation, effectively increase the frequency of use of the sagger, reduce production costs.
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