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The addition of up to 10% coke to the charge had an insignificant effect on the strength of the pellets (Table 3, experiment 5), which indicates a decisive effect on the strength of the pelletized coarse-grained materials of the type and amount of binders.
Influence of heating temperature on the strength of the pellets (The numbers at the curves are the numbers of the pellets in Table 3) Summary Thus, the laboratory studies carried out have shown the possibility of obtaining non-fired pellets dried at 100 °C from ore fines of fractions 0-5 mm, using a reducing agent [18] and clay as a binder material, which meet, in terms of strength characteristics, the requirements for charge materials for melting in low-pit ore-thermal ovens.
The control is carried out by changing the angle of inclination, the number of revolutions, moistening certain places of the moving material streams.

The trial serial numbers and surface roughness of the normal honing and ultrasonic honing are taken as horizontal coordinate, vertical coordinate respectively, and the test results are shown in Fig. 4.
Relative to the general honing, ultrasonic honing can improve the honing surface quality with less grinding force impacted on single grain; during the ultrasonic honing process, vibration at 18.6 KHz is added on the whetstone, which is seldom plugged, and under the high-frequency vibration and flushing lubricant make small chips more difficult to be stored in whetstone hole in debris to avoid "second cutting" machined surface.
Those experiments’ numbers are selected only if the actual test material removal rate greater than zero, then to plot the results with those experiments’ numbers as horizontal coordinates and the actual material removal rate of calculated ordinary and ultrasonic honing as vertical coordinates, which is shown in Fig. 6: Fig.6 Actual material removal rate test chart By analyzing the removal rate of ultrasonic vibration honing Nd-Fe-B permanent magnet material process, it concludes that the actual grinding depth of ultrasonic honing processing, ap-actual is larger than ap, and so the actual material removal rate also increased, which indicating the advantages of ultrasonic vibration honing Nd-Fe-B permanent magnet material, but also it verifies the removal model of ultrasonic vibration honing Nd-Fe-B material.

Although their main use is to prevent particles from clumping, they offer a number of other benefits: • Complete, or at least partial, elimination of the phenomenon of particles sticking to the grinding bodies
For this reason, the grinding time cannot be determined exactly, and therefore the number of passes (falls) of the ground raw material through the mill is indicated.
The problem with the wear of the rotors which is probably caused by inappropriate grain morphology and insufficient pre-grinding of the sample was solved here.
Sample Number of drops 1 2 3 4 5 6 7 8 9 10 Specific Surface Area [m2/kg] Cement 281 299 281 277 279 267 267 258 255 252 Cement+ SIKA ViscoCrete PC 1 273 301 313 296 301 327 346 343 318 331 Cement + SIKA ViscoCrete SK 3,2 272 295 276 280 277 274 276 266 265 255 The problem with this grinding technology is that it does not ensure perfect dispersion of the intensifier in the sample.

Soil surface roughness is very important in soil wind erosion prediction, because it influences trapping and emission of soil particles, abrasion of the soil surface by sultating grains, and the development of wind profiles [1].
The method of rms height statistics is as follows: (1) where: n is the number of observations taken per sample; s(x) is the surface height a point x in the surface profile; and is the average height of the surface profile.
In this article, D is calculated by root mean square(RMS) method. fractal dimensions were calculated from the average deviation around the mean elevation value of all points located inside a box with size h. average values of RMS, denoted as S(h), for different scale ranges h, were calculated according to: (3) where is the total number of boxs of size h, is the number of points in a box of size h, is the measured value of profile curve that correspond to the position, represents the average elevation value for all points in the ith box, C is scale parameter, is fractal dimension.

Micro-geometrical profile parameters were measured by a profilometer a2 dp dg Li Work surface 2α △Lc △Lg Fig.2 Schematic diagram of a spherical grain removal material from workpiece surface TALSURF5, and SEM was used to observe surface micro-morphology.
The higher the abrasive concentration was, the greater number of effective abrasive there was participated in machining, and the stronger the sliding-friction effect on workpiece surface became, which better uniformed and reduced surface roughness and waviness.
Fig.3 Effect of abrasive mesh size on △Ra value Fig.4 Effect of percentage abrasive concentration on Ra values at different number of cycles Effect of Initial Abrasive Jet Speed on Surface Roughness.
Cai: Journal of Northeastern University (Natural Science), Vol. 26 (6) Fig.5 Effect of number of cycles on surface roughness percentage improvement △Ra% Fig.6 Effect of media flow speed on △R value (2005), pp.578-581.

The Vickers hardness numbers were taken at the cross section at half of the depth of the weld at spacing distance of 0.1mm between each indentation.
The interfaces of the weld have grain distortion feature, and a pair of the base metals in some weldment are not in the same plane as expressed in Figure 1(a).
Figure 2 shows the Vickers hardness numbers are higher in the weld and neighboring region but lower in the base metal that far from the weld region.
Compare these figures, the distribution of the higher Vickers numbers closed to the interface (see Figure 2) is wider than the widths of the welds (see Figures 1(j) ~ 1(l)).

Introduction Rice is the main grain crop of China, rice production in agricultural production occupies an important position.
The number of frost-free days is 220 per year.
The input vectors were farmland water level, submerging duration, air temperature, solar radiation, wind speed and air relative humidity values of each treatment at the specific moments, i.e., the network input layer unit number n = 6; the output vector was soil temperature of each treatment at specific moments, i.e., the output layer unit number m = 1.
The determination of the nodes number of hidden layer is referred to the calculating formula (2): (2) Where, n is for the notes number of input layer, m is for the nodes number of output layer, constant a =1~10.
For example, selecting input and output of 8 kinds of water level management at 6: 00 as training samples, the number of hidden layer nodes values were in [4, 13], in order to determine the optimal number of hidden layer nodes, it was separately trained neural network on the notes number from 4 to 13, taking the training error, error curve, the degree of smoothing, the convergence speed, and the number of nodes into consideration, the number of hidden layer nodes was selected 7 notes.

A small amount of Ni about 0.1 ~ 1% which is effective to refine the grain size and graphite size.
As we can see from the Table.1, the number of graphite nodules don’t change greatly, the average diameter increases by about 30% and the total area of graphite increases by 53% when joining the Ni-38%wt Si alloys.
The number of graphite nodules is controlled by nucleation rate.
Compared to the number of graphite nodules, Ni-Si alloys has the ability to promote the graphite nucleation, but its effect is slightly worse than that of 75 ferrosilicon.
Fig. 6 Sampling sketch and number of wedge casting.

Through the study of a large number of core, logging, and logging data, on the basis of previous research (Nantun Formation is divided into two period which are the first member of Nantun Formation and the second member of Nantun Formation), combined with the characteristics of the seismic, the sedimentary facies of Wunan sub depression is researched.
The fan delta plain with a plurality of coarse to medium grained positive cycle is dominated, with small amount of fine sand to mud deposit, in sandstone the bottom scour and trough cross bedding could be observed usually.

The as-prepared composite pellets were characterized and the results showed that the collagen fibrils acted as bridges to connect the adjacent calcium sulfate grains, especially when there was a high mass loading of collagen, which effectively depressed the rapid degradation of the pellets and improved compressive strength, and the optimal strength reached 17.2 MPa with 6 mg/mL collagen solution.
The number of the osteoblasts on the pellets surface gradually increased as time was prolonged, and the differences were more obviously between the pure CaSO4 and composite pellets.