SU907432A1 - Method of quantitative determination of clay content in clay-containing mixtures - Google Patents

Description

3 is dewatered and its filtration capacity is determined, by which the quantitative content of clay is judged. In addition, the filtration capacity is determined by determining the filtration duration of 50- (00 ml of water through a dehydrated sample. The method is carried out as follows. To determine the quantitative content of clay in a zologlin suspension, three samples are taken with a volume of 100 ml each and three samples of the same control ash volume the suspension, which is partially dewatered on the installation shown in the drawing, by creating an overpressure on the layer poured on the semi-permeable fluid for the substrate 1 of the bottom of the filter bed ki 2. samples of zalanine or ash suspension. When the vacuum pump 3 is turned on, the cavity of the flask + connected to the pump by side branch 5 creates a discharge, while the liquid phase of the suspension through the substrate 1 and the filter funnel 2 installed in the neck of the flask +, is removed, and suspended solids particles are deposited on the substrate 1 to form a compacted layer, the DENSITY of which depends on the properties of the solid phase of the suspension, one of which is the presence and amount of clay. Dehydration of the suspension sample is carried out before the sediment surface starts drying, which marks the appearance of an increasing matt spot. At this point, 200 mp water is poured onto the surface of the sediment into the filter funnel 2 and simultaneously include a stopwatch. The stopwatch is turned off when re-drying the surface of the sediment. The time marked by the stopwatch is the duration of filtration with 200 ml of water through a partially dehydrated layer of the solid phase of the zologlin or ash suspension. According to the results of filtering parallel samples of zologlin and ash suspensions, the average values are also shown on the table. Figure 1 shows the amount of clay in the zologlin suspension. Tab. 1 was compiled on the basis of experimental data when determining the filtering ability of the ashes of the Moldavskaya GRES and zologlin mixes. This one is based on them, used as a raw material for ashes and grains. The sample volume is 100 cm, the amount of water per filter 200 ml.

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Clay N-Andri Shevskogo field of the Moldavian SSR

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2,

3

one

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To determine the quantitative content of clay in the construction sands, three samples are taken from the test and control sands

4k

100 cm each. Samples are closed with water up to a volume of 200 cm each, partially dehydrated. Iltruck way. 40 is determined by the filtration time of kOO ml of water. The results of the filter. one

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Clay N-Andri Shevskogo field of the Moldavian SSR

Claims (3)

Vani parallel samples are statistically processed. According to the average results in the table. 2 determine the quantitative content of clay in clay-containing sands (Table Sands). Table 2 was based on experimental no-j data obtained in determining the filtering ability of the sands of the Varnitsky deposit in the Moldavian SSR. Table 2 g of inorganic mixtures; and in the preparation of such, timely adjustments are made. Claim 1. Method for determining the quantitative content of clay in clay-containing mixtures is prepared by Samples and determination of its physical properties, differing from the fact that, in order to simplify and intensify the determination process, the sample is dehydrated and its filter capacity is determined, by which the quantitative content of clay is judged. 2. Method according to claim 1, Distinguished by the fact that the filtering ability is determined by determining the duration of filtration. PF of water through a dehydrated sample. Sources of information taken into account in the examination 1. GOST 8735-75. Sand for construction work. Test methods. 2. GOST 21216.2-75. Raw clay. Method for determining the content of fine fractions. 3.Knigina G.I. and others. Laboratory work on the technology of construction-. Noah ceramics, and light porous aggregates. M., Higher School, 1972, p. 15-17.