54 results about "Sieve analysis" patented technology

The present invention discloses a rapid test for determining particle attrition in which i) a particle is ground, ii) a sieve analysis is performed on the ground product, and iii) the result of the sieve analysis is compared to at least one reference value A comparison was made to classify the particle attrition where the particle was ground in a cutting mill.

Disclosed are silica-filled rubber granules comprised of a cocoagulation product of rubber and silica, which are extremely less powdery and excellent in handling and kneading, as well as an industrially advantageous process for producing same. The silica-filled rubber granules of the present invention are dried granules of a cocoagulation product of rubber and silica particles, which are characterized in that an average particle diameter (D50) in terms of the sieve analysis is 300˜3000 μm and the weight ratio of the granules within the range of D50±(D50×0.5) is at least 50% by weight. The silica-filled rubber granules are produced by supplying a cake of a cocoagulation product of silica and rubber having a water content of 40˜80% by weight to a drier provided with an indirect-heating type container having stirring wing blades, and then drying the cake while stirring it with the stirring wing blade.

The invention relates to a method for accurately loading and replenishing balls in a ball mill, which belongs to the technical field of ore crushing and fine grinding. According to the purpose of ore grinding, this accurate and convenient method of filling balls is proposed, including: measuring the mechanical parameters of the ore to be ground; screening and analyzing the new feed ore and sand return of the mill, and calculating the full feed The ore particle size is composed and grouped; the ball diameter value required by each group of ore particles is calculated using the ball diameter semi-theoretical formula; the ball ratio of the balls initially loaded in the mill is determined according to the ore particles of each group and the required ball diameter to be ground; Draw the positive cumulative characteristic curve of the particle size of the ball charge, and then obtain the ball diameter and the proportion of the ball to be added accurately from the graph. Applying this method to replenish balls, due to the precise ball diameter, reasonable proportion and simple method, increases the output per hour of the mill, improves the quality of the grinding product, reduces the power consumption of the ball, and increases the dissociation degree of the grinding product monomer. The beneficiation recovery rate and concentrate grade have also been improved.

The invention discloses a wet-type grading analysis vibrating sieve set and application of the wet-type grading analysis vibrating sieve set. The wet-type grading analysis vibrating sieve set can efficiently and accurately conduct screen analysis of materials. According to the structure, the vibrating sieve set comprises an electromagnetic vibrator, a vibrating disk, rubber springs, a standard sieve set upper pressing disk, a standard sieve set hanging frame, a standard sieve set hanging chassis, vibrating disk supporting rods, a base, a standard sieve set upper pressing disk fixing clamp, a water trough, standard sieve set bodies and a water discharging opening. An application method of the vibrating sieve set comprises a first step of lifting the vibrating disk and taking down the vibrating disk and the sieve set handing frame together from the vibrating disk supporting rods, a second step of selecting needed standard sieve set bodies, a third step of placing standard sieves which are sleeved in the hanging frame, a fourth step of stably placing the vibrating disk on rubber springs arranged on the supporting rods, a fifth step of plugging the water discharging opening of the water trough with a rubber plug and pouring water into the water trough, a sixth step of starting the vibrator and discharging materials below the finest-mesh sieve, and a seventh step of respectively filtering, drying, weighing and sampling different particles, and conducting analysis and test. The wet-type grading analysis vibrating sieve set is wide in application range, high in grading precision, less in dust in operation environment, and capable of being widely applied to scientific researches and production.

A phytosterol / salt mixture for even topical application to snack products. At least one free phytosterol in dry form is combined with at least one salt of a similar particle size to form a homogenous blend and applied to the surface of a hot snack food product. The at least one free phytosterol can also be part of a phytosterol blend comprised of at least 95% free phytosterols. To ensure that neither the phytosterol nor salt component settles out and to provide for uniformity of the homogenous blend, the phytosterol blend is of a similar size distribution to the at least one salt. In test runs, a phytosterol blend and at least one salt were combined in a ratio of approximately 53:47, with size ranges determined by sieve analysis to generally fell within the range of 149 to 400 microns.

The invention discloses a farmland soil year wind erosion amount estimation method. The method comprises the following steps that plough layer surface layer soil and plough layer lower layer soil are respectively collected, dry sieving analysis is carried out to detect the content of erosive particles and non-erosive particles in the surface layer soil and the lower layer soil, and the content is substituted to a formula for calculation to obtain soil year wind erosion amount. According to the method, the difference of the content of erosive particles between the surface layer soil and the lower layer soil is used for estimating the current soil year wind erosion amount, and the problem which demands prompt solution in the soil wind erosion research is solved. The method is simple, practical, and quick in operation and convenient to operate, samples of the plough layer surface layer soil and the lower layer soil only need to be collected for analysis and calculation after the wind erosion season in spring is over, and the year wind erosion amount of farmland can be obtained. The method is wide in application range and can be applied to estimation of year wind erosion amount of almost all wind erosion farmlands.