建築材料
Bettersizeは、あらゆる種類の鉱山および鉱物の研究、製造、応用において、粒子サイズおよび形状分析機器を広く使用し、有利な利益をもたらしています。
Bettersizeの粒度および形状分析装置は、鉱山および鉱物の深部加工において、完全な物性分析と粒度分析を提供します。これにより、粒度分布、粒子形状、流動性、タップ密度、嵩密度などのデータを提供し、鉱物加工のコストを削減し、製品の正しい粒子グレードを制御するのに役立ちます。
研磨剤、ホタル石、ガリウム、マイカ、ソーダ灰、アンチモン、ガーネット、モリブデン、ヒ素、ニッケル、ストロンチウム、アスベスト、ゲルマニウム、ニオブ、硫黄、重晶石、金、タルク、ボーキサイト、黒鉛、タンタル、ベリリウム、石膏、パーライト、テルル、ビスマス、ハフニウム、リン鉱石、タリウム、ホウ素、プラチナ、トリウム、臭素、インジウム、カリ、錫、カドミウム、ヨウ素、軽石、チタン、セメント、鉄鋼、水晶、タングステン、セシウム、鉄鉱石、レアアース、バナジウム、クロム、酸化鉄顔料、レニウム、バーミキュライト、粘土、カイヤナイト、ルビジウム、珪灰石、コバルト、鉛、イットリウム、銅、石灰、砂、ゼオライト、ダイヤモンド、リチウム、スカンジウム、亜鉛、珪藻土、マグネシウム、セレン、ジルコニウム、長石、マンガン、シリコンなど、これらの材料はすべて鉱山で採掘され、鉱石から抽出されます。
採掘される際、鉱物の抽出における粒度分布測定は技術的に要求が厳しく、困難です。鉱石は発破または切断され、二次破砕や粉砕のために工場に運ばれ、目的の用途に合わせて材料が準備されます。
粉砕
多くの場合、貴重な鉱物は脈石と混合しているため、鉱石を分離する必要があります。多くの分離プロセスの最初のステップは粉砕であり、その後、さらなる粉砕や鉱石の濃縮のための分級が続きます。粉砕中、各粒子が主に1つの鉱物で構成されるように、粒子が十分に小さくなるように鉱石を粉砕する必要があります。
重力分離
重力分離は、物質の質量の違いに基づいて鉱物を分離します。方法には、治具、水門、スパイラル、振動台、微粒子分離器、ハイドロサイザー、サイクロンが含まれます。重力分離は重量のみに基づくため、粒子サイズに直接影響されます。均一な粒子サイズが重要です。
泡浮選
材料は界面化学によって分離されます。スラリー中を流れる気泡は疎水性表面を持つ粒子に付着し、粒子が泡の上に浮いて回収されます。粒子サイズはプロセス効率において重要であり、過度に微細な粒子は分離効率を低下させる可能性があります。
静電分離と磁気分離
静電場または磁場の下での粒子の挙動を利用して、粒子を種類ごとに分離します。これにより、狭いサイズ分布がより良好な分離につながる場合があります。
製品の発送
多くの場合、最終製品は等級付けされ、そのまままたはさらなる加工のために販売されます。特定の粒子サイズ範囲が必要とされ、製品を販売するという重要なステップで、粒子サイズや形状の制御が求められます。
以下の粒度測定装置は、サイズと形状を測定する機能を備えており、ユーザーが製造プロセス全体を通じて最適な粒度を取得できるように支援します。
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 ArticleZhejiang Ocean University | 2024Biological 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. - 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 ArticleChina University of Petroleum | 2024In 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.
- 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 ArticleShihezi University | 2024The 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. - 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 ArticleGansu Agricultural University | 2024Wheat 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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