Methods of improvement chalcedonite processing effectiveness with the use of density separation

Abstract

The article regards the issues related to chalcedonite processing by means of particle size classification as well as densimetric separation. Chalcedonite is an unique rock and material with wide industrial applications in various industries. The investigative program included laboratory tests of chalcedonite classification in the classifier and the jig, as well as separation of the material in the dense liquid. The obtained results indicate that the products of particle size classification of chalcedonite in the classifier are characterized by a different chemical and mineralogical composition. The 0-0.3 mm particle size fraction contains over 96% of quartz, while the fine size fraction below 0.063 mm contain about 80% of quartz and 20% of clayish minerals. In the next stage of the investigative program, the densimetric separation of chalcedonite material in the jig and in dense liquid, was carried out. The results of the density classification in the jig indicate the different absorbability of the obtained chalcedonite density fractions. Fractions with a higher density were characterized by lower water absorption. The results of separation in the dense media liquid also showed that the obtained aggregate products are of significant differences in absorbability as well as high variability of the strength parameters. The results of the investigations show that the obtained products of the classification can be more efficiently utilized in industry, due to their diverse chemical and physical characteristics.

Mineral Materials Coated with and Consisting of MnOx—Characteristics and Application of Filter Media for Groundwater Treatment: A Review

“…Quartz sand 2650 [44] 1520-1568 [45] 0.05-1.8 [46] 7 [47] 2650-2667 [45] Chalcedonite 2390-2500 [48] 1237-1403 [45] 6.13 [49], 7.44 [50] 6-6.5 [51] 2488-2682 [45] Diatomite 2000-2100 * [52] 200-400 * [52] 14.6 [53], 5-6.5 [54] 2244 ** [55] 1280-1780 ** [56] 22 [57], 42 [58] Glauconite 2450-2600 [59] 1380 [60] 48 [58], 58 [61], 78 [60] 2 [47] 2650-2750 [62] Zeolite 2339-2407 (clinoptilolite) [45] 2390 (clinoptilolite) [63] 800-1000 (clinoptilolite) 700-850 (chabazite) 1000-1100 (phillipsite-analcime) [64] 14 (clinoptilolite 71.8 wt. %) [57] 19.2 (clinoptilolite 45-50 wt.…”

Role of classification in grinding using the electromagnetic mill. A case study

“…To characterize the accuracy of the separation effect, we introduce separation values or separation efficiency for the classes or fractions. It is defined as the ratio of mass of the end product to the weight of that class in the feed [6,7]:…”

“…The sorted grain quantity is the particle diameter expressed in eg. μm (micrometers), for which the probability to be found in iether lower or upper fraction is equal to 50% [6].…”

“…It is most commonly presented in the form of a curve in a cordinate system in which the abscissa indicated the grain size and the ordinate the degree of separation in [%]. The separation effect curve is not a curve of particle size distribution, it is a set of points representing the infinitely narrow grain class with an average grain size d splits into upper and lower product [6].…”

The Influence of Selected Properties of Particles in the Jigging Process of Aggregates on an Example of Chalcedonite

“…In this way, the recovery of the required aggregates for engineering construction can be done. Moreover, the application of density separation methods for aggregates can be more efficiently applied in the industry because of the differentiation of the chemical and physical properties of the separation products as well as their strength and impregnability [9][10][11].…”