烧出
4.The earliest red porcelain of the world is the copper red glaze handed pot made by Changsha kiln of Tongguan in Late Tang Dynasty (1100 years earlier from now), which opened the history of red glaze porcelain of our country.
5.A paint consisting of pigment mixed with beeswax and fixed with heat after its application.
6.Process of leaching Sc from the silt of Yangtzs is studied by using the leaching media of HCl and the chlorination roasting after separating Sc concentrate,chlorination roasting process in kinds,dosage,time and temperature are investigated separately.
8.Calcinating this salt at 1200°C results in its decomposition into alumina (or aluminum oxide).
9.Alumina is then extracted from the furnace and passed over vibrating sieves to obtain an extremely fine powder with a diameter of less than one micron.
10.The leaching rate of cobalt was 95% after roasting at 1 300 ℃ by adding CaCO_3.Furthermore,the leaching rates of cobalt reached 97% by adding 5% CaCO_3 and 5% Na_2SO_3.Both of them were great improvements compared with 50% by direct sulfuric acid leaching.
