The present invention relates to a process for separating substantially pure 1,5-dinitroanthraquinone and substantially pure 1,8-dinitroanthraquinone from anthraquinone dinitration mixtures containing
When particles of mineral ore or powder mixtures are sufficiently large, for example, larger than 325 (U.S.) mesh, the components of the mixture can be separated by simple physical means such as air or magnetic separation. When particles are finer, more sophisticated technology may be needed ...
Solids, treating with liquids.--In treating solid and liquid mixtures, discharge of thickened material from the body of the pulp is automatically effected, in response to the rate of accumulation of solids therein, by opposing the hydrostatic pressure of the discharging solids by a pressure ...
Another source of acidic chemical mixtures is from the manufacture of cellulose acetate or other cellulosic materials. After these processes are completed there are generally produced as a by-product a great amount of aqueous acid which contains solids, solvents and various other components from which...
The present invention, on the other hand, avoids the pyrolysis of complexes and the severe conditions connected therewith and utilizes techniques relative to exchange reactions of aluminum alkyls with complexes and to simple decantation separation of olefins from such 2:1 complexes under certain ...
sulphonic acids, such as naphthalene sulphonic acid, lauryl benzene sulphonic acid, and stearyl naphthalene sulphonic acid; the product of a mineral oil extract sulphonated while dissolved in liquid sulphur dioxide; and innumerable other organic sulphonic and sulphuric acid derivatives or mixtures thereof...