Impact of the Grinding Process on the Granulometric Properties of Dicalcium Silicate

This article deals with the preparation and laboratory milling of β-dicalcium silicate. Dicalcium silicate is the second most important calcium silicate of Portland clinker. β-C2S is usually dominated in industrially produced clinker. Pure β-C2S can be prepared in several ways. Traditional way is the solid phase synthesis of raw material mixture. The paper deals with the preparation of β-dicalcium silicate, which is based on the modified Wesselsky-Jensen method and with the influence of length and the technology of the milling process in 3 types of laboratory mills on the particle size, distribution and agglomeration of the synthetically prepared β-dicalcium silicate.

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Experimental Uncertainty Analysis for the Particle Size Distribution for Better Understanding of Batch Grinding Process

Minerals ◽

10.3390/min11080862 ◽

2021 ◽

Vol 11 (8) ◽

pp. 862

Author(s):

José Delgado ◽

Freddy A. Lucay ◽

Felipe D. Sepúlveda

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Size Distribution ◽

Milling Process ◽

Design Parameters ◽

Grinding Process ◽

Distribution Models ◽

Statistical Parameters ◽

Weight Percentage ◽

Do So

Uncertainty in industrial processes is very common, but it is particularly high in the grinding process (GP), due to the set of interacting operating/design parameters. This uncertainty can be evaluated in different ways, but, without a doubt, one of the most important parameters that characterise all GPs is the particle size distribution (PSD). However, is the PSD a good way to quantify the uncertainty in the milling process? This is the question we attempt to answer in this paper. To do so, we use 10 experimental grinding repetitions, 3 grinding times, and 14 Tyler meshes (more than 400 experimental results). The most relevant results were compared for the weight percentage for each size (WPES), cumulative weight undersize (CWU), or the use of particle size distribution models (PSDM), in terms of continuous changes in statistical parameters in WPES for different grinding times. The probability distribution was found to be changeable when reporting the results of WPES/CWU/PSDM, we detected the over-/under-estimation of uncertainty when using WPES/CWU, and variations in the relationships between sizes were observed when using WPES/CWU. Finally, our conclusion was that the way in which the data are analysed is not trivial, due to the possible deviations that may occur in the uncertainty process.

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Features of solid phase synthesis of wollastonite from natural and technogenic raw material

Refractories and Industrial Ceramics ◽

10.1007/s11148-010-9309-2 ◽

2010 ◽

Vol 51 (4) ◽

pp. 295-301 ◽

Cited By ~ 6

Author(s):

T. V. Vakalova ◽

N. P. Karionova ◽

V. M. Pogrebenkov ◽

V. I. Vereshchagin ◽

V. V. Gorbatenko

Keyword(s):

Solid Phase Synthesis ◽

Solid Phase ◽

Raw Material ◽

Phase Synthesis

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Impact of the Drying Temperature and Grinding Technique on Biomass Grindability

Energies ◽

10.3390/en13133392 ◽

2020 ◽

Vol 13 (13) ◽

pp. 3392 ◽

Cited By ~ 6

Author(s):

Marcin Jewiarz ◽

Marek Wróbel ◽

Krzysztof Mudryk ◽

Szymon Szufa

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Energy Demand ◽

Quality Parameters ◽

Raw Material ◽

Grinding Process ◽

Drying Temperature ◽

Temperature Changes ◽

Grinding Technique ◽

Grinding System

The process of biomass compaction depends on many factors, related to material and process. One of the most important is the proper fragmentation of the raw material. In most cases, more fragmented raw material makes it easier to achieve the desired quality parameters of pellets or briquettes. While the chipping of biomass prefers moist materials, for grinding, the material needs to be dried. As drying temperature changes the properties of the material, these may affect the grinding process. The aim of this work was to determine the influence of the drying temperature of biomass raw material in the range of 60–140 °C on the biomass grindability. To only determine this effect, without the influence of moisture, grinding was carried out on the material in a dry state. The research was carried out on a mill with a knife and hammer grinding system, which is the most popular in the fragmentation of biomass. The analysis of particle size distribution and bulk density of the obtained material was carried out. The energy demand for the grinding process was determined and it was shown that drying temperature, grinding system, and mainly type of biomass affects the grindability.

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