광물

Introduction

Bettersize의 장비는 광물 자원의 연구, 제조 및 응용 분야에서 널리 사용되며, 관련 산업에 이익을 제공합니다.

Bettersize의 입자 크기 및 형태 분석기와 분말 특성 테스트기는 광물 자원의 심층 가공을 위한 물리적 특성 분석과 입도 분석을 제공하며, 입자 크기 분포, 입자 형태, 유동성, 다짐 밀도 및 부피 밀도 등의 데이터를 제공합니다. 이러한 데이터는 광물 가공 비용을 절감하고, 제품의 입자 등급을 정확히 제어하는 데 도움을 줍니다.

주요 광물 자원 및 사용 예시

다음에 나열된 광물 자원들은 채굴 후, 광석에서 추출되는 물질들입니다. 이들 자원의 입자 크기 분포 측정은 광물 추출에서 중요한 역할을 하며, 고도의 기술적 도전이 따릅니다.

광물: 연마재, 형석, 갈륨, 흑연, 바륨, 금, 백금, 철광석, 다이아몬드, 리튬 등
기타 원소들: 비소, 니켈, 셀레늄, 망간, 실리콘 등

이러한 자원들은 폭파 및 절단 후 분쇄와 연삭 과정을 거쳐 원자재로 준비됩니다.

분쇄(Comminution)

귀금속 광물은 불순물(Gangue)과 섞여 있기 때문에 이를 분리해야 합니다. 광석 분리 과정에서 분쇄가 첫 번째 단계로 이루어지며, 그 후 분쇄된 물질은 입자 크기에 따라 분류되어 추가적인 연삭이나 농축 과정을 거칩니다. 분쇄된 입자는 주로 하나의 광물을 포함할 수 있도록 충분히 작게 분쇄되어야 합니다.

중력 분리(Gravity Separation)

중력 분리는 물질의 질량 차이를 이용해 광물을 분리하는 방법입니다. 이 방법은 입자 크기와 밀접하게 관련이 있습니다. 예를 들어, 중력 분리 방법인 조, 슬루이스, 나선형 등은 입자 크기가 균일해야 분리 효율성이 높아집니다.

조(Jigging): 수압을 이용해 입자를 분리하는 방법으로, 큰 입자는 더 빨리 가라앉고, 작은 입자는 위로 떠오릅니다.
슬루이스(Sluices) 및 나선형(Spirals): 점성과 부력 차이를 이용해 입자를 분리합니다.
진동 테이블(Gravity Tables): 입자 크기와 비중을 기준으로 분리합니다. 좁은 입도 분포가 더 나은 분리 성능을 제공합니다.

거품 부상(Froth Flotation)

거품 부상은 표면 화학성을 이용해 물질을 분리하는 방법입니다. 이 방법에서 기포가 입자와 결합하여 물질을 떠오르게 하며, 입자 크기는 분리 효율성에 중요한 영향을 미칩니다. 지나치게 작은 입자는 기포에 의해 떠오르고, 너무 큰 입자는 가라앉습니다. 따라서 적절한 입자 크기가 중요합니다.

전기적 및 자기적 분리(Electrostatic and Magnetic Separation)

전기적 또는 자기적 장치에서 입자들은 입자 크기에 따라 다르게 움직입니다. 이 분리 방법은 작은 입자가 더 멀리 이동하며, 표면에서 발생하는 전하가 큰 입자에 비해 더 많은 힘을 받을 수 있도록 합니다.

최종 제품 운송(Shipping Product)

최종 제품은 입자 크기 범위에 따라 분급되며, 이를 통해 제조 공정의 최적화를 보장합니다. 판매 단계에서는 입자 크기뿐만 아니라 입자 형태도 중요합니다. 따라서 많은 광산에서는 입자 크기와 입자 형태를 제어하여 최종 제품의 품질을 향상시킵니다.

Bettersize의 입자 크기 측정 시스템은 광물 가공 전반에 걸쳐 최적의 입자 크기와 형태를 얻을 수 있도록 지원합니다.

Citations

Bettersizer 2600

Functional redundancy as an indicator for evaluating functional diversity of macrobenthos under the mussel raft farm near Gouqi Island

DOI: 10.1016/j.aquaculture.2023.740024 Read Article

Zhejiang Ocean University | 2024

Biological traits analysis (BTA) helps to evaluate the effects of different environmental variables on the traits-based functional composition of macrobenthos. However, research on functional traits of macrobenthos under mussel farming is limited. We investigated the spatial and temporal response of the benthic system in terms of taxonomic and functional diversity to environmental variables of farming and natural stressors resulting from suspended mussel farming near Gouqi Island of eastern China Sea. The functional traits of macrobenthic assemblages under mussel farming were characterized by “medium adult body size”, “vermiform body form”, “high flexibility”, “infauna”, “semi-motile”, “gonochoristic”, “surface deposit-feeders”, “carnivores”, “semi-motile burrowers”, and “tube-dwellers”. Functional redundancy was stable in response to mussel farming stresses among seasons, whereas species diversity showed efficient to evaluate natural variables. Functional diversity was significantly affected by farming stressors rather than natural variables, Further analysis using multivariate methods together with continuous monitoring were highlighted to evaluate the impacts of mussel farming. Our results reinforce the importance of macrobenthic species and functional traits analysis to evaluate human stresses driven impacts in offshore ecosystems. By analysing the environmental variables with different sources, independently, we concluded the main effects of human pressures on macrobenthic community. Such distinction could be particularly effective to isolate variable environmental descriptors and evaluate their effects on functional diversity, making the current approach promising for the evaluation of ecological effects of anthropogenic stressors in aquaculture areas.

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Bettersizer 2600

Degradation characteristics and utilization strategies of a covalent bonded resin-based solid amine during capturing CO₂ from flue gas

DOI: 10.1016/j.seppur.2023.125621 Read Article

China University of Petroleum | 2024

In this study, various types of degradation as well as attrition which are possibly encountered in a circulating fluidized bed temperature swing adsorption (CFB-TSA) process, were conducted experimentally to evaluate the stability of a resin-based solid amine sorbent. Other characterizations methods, such as elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR) etc. were applied to further reveal the degradation mechanisms. The results showed that thermal degradation occurs from 140–160 °C due to the decomposition of amine group. The CO₂-induced degradation occurs from a higher temperature of 160–180 °C accompanied by the production of urea. Hydrothermal stability is good below 130 °C, but the ionic impurities in steam crystalized on particle surface can accelerate the degradation. Oxidative degradation is the most harmful, which starts at a lower temperature of 70–80 °C with the formation of aldehyde. The existence of H₂O in atmosphere can alleviate the oxidative and CO₂-induced degradations. The employed sorbent has a very low attrition index of 0.05, which is 1–2 orders lower than typical commercial fluidized bed catalysts. Based on the results of stability evaluation, some design suggestions for proper utilization of this sorbent or other similar resin-based sorbents have been provided in an industrial CFB-TSA process.

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Bettersizer 2600

De-branching of starch molecules enhanced the complexation with chitosan and its potential utilization for delivering hydrophobic compounds

DOI: 10.1016/j.foodhyd.2023.109498 Read Article

Shihezi University | 2024

The current study aimed to prepare the complexes between debranched-waxy corn starch and chitosan polymers (DBS-CS), and then investigated their corresponding structural characteristics, rheological property and potent application in Pickering emulsion. The results indicated that the existence of chitosan significantly inhibited starch short-range molecular rearrangement for all DBS-CS samples, which was manipulated by both debranching treatment and chitosan content. Interestingly, this is the first study to reveal that the outstanding peak at 1.8 ppm in 1H NMR spectrum for sample DBS-CS was gradually shifted towards a lower-field region following an increased chitosan content. Moreover, the debranching treatment shifted the crystallinity pattern from A-type to B-type and the relative crystallinity of DBS-CS decreased gradually with the increased content of CS. All samples had a pseudoplastic fluid and shear-thinning behavior with an enhanced shear resistance following the complexation. The DBS-CS was applied in a Pickering emulsion for showing a greater emulsifying stability and a lower gel strength than native NS-CS prepared emulsion. Importantly, the encapsulation ability of curcumin in the DBS-CS emulsion was significantly improved, followed by an increase of 15.45% for its corresponding bioavailability compared to the control. Therefore, this study might highlight a potential carrier for delivering the bioactive substances in a green pattern.

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Bettersizer 2600

Heat-induced aggregation behavior of wheat gluten after adding citrus pectin with different esterification degree

DOI: 10.1016/j.foodhyd.2023.109420 Read Article

Gansu Agricultural University | 2024

Wheat gluten aggregation during heat treatment is beneficial to the final quality of gluten-based products. Exogenous pectin can affect gluten aggregation. However, the effect of pectin with different degrees of esterification on the heat-induced aggregation behavior of gluten and its possible mechanism are still unclear. Thus, the heat-induced aggregation behavior of gluten after adding pectin with different esterification degree was studied in this study. When the temperature was raised from 25 °C to 95 °C, pectin affected gluten aggregation and was related to the degree of esterification. Specifically, the results of rheological properties and particle size indicated that low-ester pectin improved the viscoelasticity of gluten and promoted gluten aggregation. Thermal properties revealed that enthalpy of gluten added with low-ester pectin (37%) increased from 92.96 J/g to 95.40 J/g during heating process. Structurally, the fluorescence intensity and surface hydrophobicity of gluten added with low-ester pectin (37%) were lower than those added with high-ester pectin (73%). In addition, low-ester pectin (37%) significantly increased the disulfide bond content (from 15.31 μmol/g to 18.06 μmol/g) and maintained β-sheet content of gluten compared with gluten alone at 95 °C, indicating that low-ester pectin was more likely to induce gluten aggregation. However, scanning electron microscope showed that the gluten added with low-ester pectin (46%) exhibited a denser network structure at 95 °C than that added with low-ester pectin (37%). These results will provide a theoretical base for the regulation of gluten aggregation and the quality of gluten-based products by pectin with different esterification degree.

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레이저 회절법을 이용한 탄산칼슘 분말의 입자 크기 분포 측정

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