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カッティングミル SM 200

アプリケーションレポート (24)

  • カッティングミルSM300伝統からの革新

    カッティングミルは試料調製に広く使われている粉砕機です。二次燃料の粉砕、再生可能な
    バイオマスの研究開発、WEEE/RoHS対応の成分分析および有価金属の回収など、その
    アプリケーションは多岐にわたります。
  • 再生可能なエネルギー

    営林作業や木材加工で生じた廃材は木材チッ プに加工されますが、木や樹皮の種類、残留 水分などによって、様々な用途に使用されま す。チップボードの原料やきのこ類のほだ木 などはその一例ですが、主に燃料として利用 されます。木材チップの品質は、樹木の種類 や保管状態によって大きく異なります。燃料 として商取引する場合、乾燥状態と含水量に よって違う発熱量の把握が重要になります。 そこでサンプルの分析結果が大切な取引条件 になるため、代表性と再現性のある試料調製 が必要です。
  • 注目される資源の再生

    植物の代表サンプル作成には経験が必要 切迫した原料不足を背景に産業界は、再生可能な資源の利用技術開発に注力しています。その中でも様々な植物は繊維、顔料、医薬品、燃料、油脂および緩衝材の原料として脚光を浴びています。しかし、植物はその複雑な組成や成分のため、分析用の試料調製が困難なもののひとつです。予備粉砕から微粉砕までの最適な粉砕方法を見つけ出すのは簡単なことではなく、経験とノウハウが必要です。
  • 玩具中の重金属分析

    玩具は安全でなければなりません。これは玩具中のヒ素、鉛、カドミウム、およびアンチモンの様な物質の最大許容値を定めたEU指令88/378/EWGに明確に記載されており、含有量は子供に害があると推定されるレベル以下でなければいけません。最近では、玩具から基準値を上回る重金属が検出された事例がメディアを賑わせているため、消費者の安全への関心も高まっています。そのため、玩具メーカーにとっては、信頼性のある品質管理によって製品の無害を立証することが重要な課題となっています。
  • 環境負荷物質の検出(RoHS/WEEE)

    電子部品廃棄物の試料調製 ラジコンカーの分析用試料調製の方法を説明しています。  プラスチックの顔料に含まれるカドミウム、ハンダ中の鉛、ケーブルの難燃材に含まれるPBBなど、電子部品の中には有害物質が含まれている可能性が数多くあります。EUの有害物質規制に関する指令(WEEE/RoHS)が2006年7月に発令されて以来、機器メーカー、部品メーカー、材料メーカー、およびリサイクル業者は、その対応に迫られています。
  • White Paper: Cryogenic Preparation of Sample Materials

    A solid sample material should always be sufficiently prepared by size reduction and homogenization before it is subjected to chemical or physical analysis. Care should be taken that the analysis sample fully represents the original material and that the sample preparation process is carried out reproducibly. Only then are meaningful results guaranteed. Most sample materials can be reduced to the required analytical fineness at room temperature by choosing a mill with a suitable size reduction principle (impact, pressure, friction, shearing, cutting).
  • Toxic substances in our daily life

    Plastic is an inherent part of our everyday lives; it is used in a huge variety of things such as, for example, packaging, furniture, clothing or electronic devices. Though the utility of the material is undoubted, consumers are increasingly unsettled by recurring news about hazardous substances detected in plastics.
    Substances such as plasticizers, which are not firmly bound in the material, are absorbed via the skin and can influence the hormonal balance. Plasticizers contained in food packaging, for example, penetrate into the food and thus into the human body when the food is eaten. Plasticizers in toys are a particularly serious problem; children tend to take toys into their mouths thus absorbing the dangerous chemicals.  Equally hazardous are polycyclic aromatic hydrocarbons (PAH). The family of PAH comprises more than 100 compounds most of which have been found to be carcinogenic.
  • Outdoor clothing: Pure nature or traces of poison?

    Outdoor activities such as hiking, biking or climbing are very popular. As a result, the textile industry offers a huge variety of functional outdoor clothing made from synthetic high-tech materials which are wind- and waterproof as well as breathable. In 2013 Greenpeace published a study proving that hazardous substances such as perfluorinated and polyfluorinated chemicals (PFC) were used in weatherproof clothing as protection against water or dirt. This article describes the sample preparation process with cutting mills and cryogenic mills of high-tech fibres.
  • The effect of grinding tools on metal contamination

    Reliable and accurate analysis results can only be guaranteed by reproducible sample preparation. This consists of transforming a laboratory sample into a representative part sample with homogeneous analytical fineness. Retsch offers a comprehensive range of the most modern mills and crushers for coarse, fine and ultra-fine size reduction of almost any material. The product range also comprises a wide choice of grinding tools and accessories which helps to ensure contamination-free preparation of a great variety of sample materials.
    The selection of the correct grinding tool depends on the sample material and the subsequent method of analysis. Different grinding tools have different characteristics, such as required energy input, hardness or wear-resistance.
  • Renewable energies on the rise

    Sample preparation of vegetable-based raw materials with laboratory mills

    Thanks to the increasing usage of biomass as a source of energy, the analysis of these materials in the context of R&D and quality control gains importance, too. Due to the complex properties of plant materials, adequate sample preparation can be rather a challenge.
  • Down to the bone

    Use of laboratory grinders for size reduction of human bones and bioceramics

    Bone implants and substances for bone regeneration are used in surgery to replace degenerated bone material by implants or to “re-build” it with specific substances. The material used in implants varies from autogeneic (supplied by the patient) through allogeneic (supplied by a donor) bones to replacement materials such as hydroxylapatite (HA) and tricalcium phosphate (TCP). Bovine bones and corals are used in conjunction with synthetically produced foamed materials to form a basis for the regeneration of bone substance. Various RETSCH mills are suitable for the preliminary and fine grinding of human bones as well as bioceramic materials.
  • As fine as necessary

    A variety of methods can be used to analyze solid materials. What they all have in common is the necessity to use a representative, homogeneous analysis sample which needs to have a particular fineness, depending on the analytical method used. The size reduction and homogenization of solids is usually carried out with laboratory crushers and grinders.
  • White Paper: Representative Analysis Results Require Adequate Sample Preparation

    A faultless and comparable analysis is closely linked to an accurate sample handling. Only a sample representative of the initial material can provide meaningful analysis results. Rotating dividers and rotary tube dividers are an important means to ensure the representativeness of a sample and thus the reproducibility of the analysis. Correct sample handling consequently minimizes the probability of a production stop due to incorrect analysis results. Thus correct sample handling is the key to effective quality control.
  • Quality control of cement

    Quality control is an important aspect of cement production. Sample preparation is an essential part of it, because only a representative and reproducible processing of the sample material ensures reliable and meaningful analysis results. RETSCH offers a range of instruments for dividing, crushing, grinding and sizing all materials which are involved in the production process of cement, including secondary fuels. To ensure the right choice of instrument for the right sample material, Retsch offers free-of-charge sample testing in application laboratories all over the world.
    Elemental analysers based on combustion technology are a useful addition to XRF analysis for the quality control of cement and related products, ensuring fast, precise and reliable determination of carbon and sulphur. With its offering of analyzers using resistance or induction furnaces or both, ELTRA covers a wide range of applications for C and S determination in organic and inorganic samples. The product range is ideally suited to the variety of analytical applications in a cement plant.
  • Secondary fuels – Energy for the cement industry

    Due to decreasing resources and increasing market prices for primary fuels like oil, gas or coal, it is paramount for the cement industry to search for alternative energy sources. With regard to the CO2 emissions trading, a switch to energy sources which have a neutral CO2 balance can be rather profitable. Usually, these are non-fossil fuels. Industries with high energy consumption have made increasing use of alternative fuels during the last years. Accordingly, the use of so called secondary fuels (also waste derived fuels/wdf or refuse derived fuels/rdf) has gained importance. These are mostly combustible fractions of domestic or industrial waste which cannot be recycled.
  • Powerful Cutting Mill

    The SM 300 excels especially in the tough jobs where other cutting mills fail. It has a freely selectable speed range from 700 to 3,000 rpm with high torque. The mill is convenient to operate and easy to clean. Reliable and extremely efficient sample preparation in the laboratory is now guaranteed with the SM 300.
  • Sample prep and analysis of secondary fuels

    With ever increasing socio-economic and geo-political demands, the use of secondary fuels in cement manufacture is a well-established practice for reducing both costs and CO2 emissions. The depletion of resources, combined with an increasing demand for primary fuels such as oil, gas or coal, make it paramount for energy consuming industries to search for alternative energy sources.
  • Detection of Mycotoxins in Nuts

    Preliminary and fine size reduction
  • Preparation of Elastic Plastics for the Detection of PAH

    Polycyclic aromatic hydrocarbons, short PAH, are usually a by-product of combustion and can be found, for example, in cigarette smoke or oil-based products. Mineral oil containing PAH is often used in rubber products as plasticizer, especially in black-coloured products such as car tyres, rubber grips of tools or rubber shoe soles. It was discovered that some polycyclic aromatic hydrocarbons are carcinogenic, so that maximum permissible values have been determined for the concentration of PAH in consumer products.
  • Size reduction of elastic plastics with volatile components

    Neutral-to-analysis sample preparation for the detection of PAH and phthalates
  • Sick with Dolls

    Traces of Heavy Metals in Toys
  • Cement - representative sample preparation is important

    To produce high-quality cement, the mineralogical and chemical composition of raw materials as well as intermediate and finished products has to be determined. At each stage of the production, samples have to be taken, processed and analysed to ensure quality control without gaps. Retsch offers a range of instruments that are used for sample preparation during the complete production process, from the quarrying of the raw materials to the final product. The typical sample preparation process involves preliminary size reduction, sample division and fine size reduction before the sample can be submitted to further analyses....
  • Sample Preparation of Electronic Scrap in the Context of RoHS and WEEE

    Since August 2004 new EU directives for the disposal of used electrical and electronic appliances as well as the restricted use of certain hazardous substances in these devices have become effective.
  • Sample preparation of electronic scrap with SM 2000 and ZM 200

    RETSCH mills in the context of RoHS and WEEE

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