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Introduction Kiln slag was obtained from water hardening after leaching residue with a large number of coke powder went thought high temperature in volatile kiln reducing and volatilizing zinc, lead, cadmium, indium[1].The traditional treatment process of kiln slag include the combined process of segregation-flotation, hydrochloric acid leaching[2], bacterial leaching, flotation-chloridizing roasting, chloride-sulfate roasting, sintering-blast furnace, submerged smelting and magnetic separation –screening- air classification[3].
It was bad for mineral separation that constitute of the ore was complex. 2.1 Flotation test Flotation having good selectivity is an effective method of recovery of fine grained minerals.

(2) Where Mg-Si-O is mainly accumulated onto the surface of oxidization layer, it has large and hard grain, thus the membrane surface is relatively coarse.
However, due to limited number of severe sparking, the discharge is not so even, thus the roughness on surface of membrane is relatively high.

To solve this problem, the surface modeling technology of CAD/CAM has been used and solved it. 2.1 Theory of modeling parts with freeform surfaces （1） The expression of the freeform curve A freeform curve is a curve with no specified shape; it can’t be described as a straight line, a circular arc or a second conical section, but can be only described as a certain numbers of discrete points. [2]In practical use, the curve is always built by mathematical algorithm since the particle array, the trend of the array, and the join condition have been given, it gets through or close to the specified mass points.
It can be built by sweeping, also can be made of curve grid or the curve, even by creating the straight grain surfaces. [7-9]Usually on the basis of the appearance requirement, we can establish the boundary curves or build the curves according to the sample measurement data points for the surface, then establish the surface by the surface built methods of UG.

Method of abrasive belt grinding robot for aero-engine blade Aim at aero-engine blade structural characteristics, grinding material performance, and analyze grinding process requirement, combining with the high efficiency of abrasive belt grinding, low grinding force, low grinding temperature and good flexibility of the process [2], based on belt grinding robot method is put forward to realize the rough and finish machining aero-engine blade with different particle size grain.
The total transformation between the base and the hand of the robot is as follows: （1） Where n is the number of joints.

Fig. 1 The curves for grain aggregate with Dmax 63 mm [4].
The projects registration numbers is SP2015/139.

It indicates that the copper grain is the surface-centered cubic structure.
Fig.4: Capacity vs. cycle number for four kinds of electrodes.

There are a number of conventional specimen preparation techniques have been applied for the larger powders.
TEM analysis b a Fig.7a is TEM specimen image of the specimen and there was no clear grain boundary in specimen.

Table 1 The experiment parameters Number Wheel speed nt/rpm Workpiece speed nw/rpm Cutting depth ap/mm Feed rate V/mm 1 4000，7000 200 2.0 150 2 7000 200 0.5，2.0 150 Measuring of surface morphology.
That is because the broken crystals entered grain boundary and led the glass phases separating out on the surface when processing.

Low demand for silica fine fillers on the market is mainly caused by insufficient number of studies on silica flour impact on dry mortars performance.
Fineness Reference sample Gypsum plaster with limestone powder Gypsum plaster with silica flour 5.000 mm - - - 1.250 mm - - - 0.200 mm 8.72% 9.87% - 11.92%* 8.96% - 10.85%* 0.125 mm 14.68% 14.81% - 14.96%* 14.79% - 14.94%* Maximum grain size 0.630 mm 0.630 mm 0.630 mm * - the value grows with increasing dosage of FMF in the formulation Reference sample Figure 1.

The powders were then ground in a mortar and benefited # 100 mesh sieve to standardize the size of the grains.
For the test of scanning electron microscopy can be seen a marked number of pores which helped to inhibit the improvement of mechanical properties of the composites.