1 The alkaline cementitious properties of calcining clay which contain kaolin e and quartz is studied.

2 Optimum calcining technology parameter from phosphogypsum to plaster of paris is determined.

3 In this paper, optimizing control of calcining heat and fuel combustion in a ring-type calciner are expounded.

4 The solid phase abrading and calcining at the proper temperature are necessary to this step.

5 The experiment results show that with calcining temperature rise the color of ferric red gradually deepened from mauve to chrysoidine , morphology of ferric red also changed.

6 Aiming at one of lithopone calcining rotary kiln process systems in some factory, this paper proposes a control method which is based on the equal mass and equal energy idea.

7 Red Lead Red lead is made by calcining litharge in a muffle furnace.

8 Taixi anthracite with high quality calcining is also suitable raw material.

9 In this paper the industrial conditions of calcining hydrate using recycle fluid bed calciner were introduced.

10 The process for the treatment of the waste acid from crude benzol refining with calcining process is studied, the optimum operation data are discussed and the process is optimized.

11 The carbonate from calcium carbonate, if not remoyed by calcining may cause foaming in the reactors.

12 The leaching solution was purified by ion exchange, and then ammonium metavanadate was precipitated. A qualified product V 2O 5 was obtained by calcining ammonium metavanadate .

13 Furthermore, the electrocatalysis activities of powder properly prepared by microwave calcining are much higher than that by high temperature calcine.

14 The calcine temperature and lasting time were selected as technological parameter during the calcining process.

15 Dead - Burned Magnesite is produced with selected natural magnesite through purifying calcining in shaft kiln.

16 The results showed that the macrostructure, the composition of the crystal phase and the catalytic activity of the catalyst are related to the calcining temperature.

17 Taking phosphogypsum from factory as the raw material, the possibility of transformation into plaster of paris is studied by the experiments of chemical analysis, calcining technology, check test.

18 This paper mainly describes the industrial production line using calcium carbide dreg dosing and new technology "dry grinding and dry calcining" for dry production process of cement clinker.