铝碳化硅火泥和刚玉火泥区别?
铬刚玉耐火胶泥有干粉式和泥状两种,干粉式铬刚玉胶泥在施工的时候只需加入少量洁净水搅拌即可使用,适合物流倒运、出口等长距离运输和中转。泥状铬刚玉胶泥可直接使用,不需再加水或者其他溶剂。铬刚玉胶泥是采用优质电熔氧化铬绿、a-氧化铝微粉、磷酸二轻铝、铬刚玉细粉等搅拌而成,主要用于砌筑铬刚玉砖、高铬砖、铬质材料砌筑、安装,也可用于炉衬表面涂抹材料等。铬刚玉胶泥粘接力度大,粘接效果好,耐火性能优异,在1900度高温使用体积稳定,在中温烧结以后炉衬粘接效果更棒,是炭黑反应炉、水煤浆气化炉、特种高温窑炉的首 选砌筑材料。
碳化硅颗粒、碳化硅细粉和黏土细粉为主要原料,这种火泥用于砌筑ТПА-30-102型轧机分段加热炉的炉衬。采用最佳的组成,可使MKK-70牌号碳化硅耐火火泥达到最大的寿命。应客户要求,对施工现场取回的5种铝电解槽用SiC火泥进行了化学组成、粒度分布、稠度、加水量、粘结时间、常温抗折粘结强度等分析,结合施工现场的实际情况,对SiC火泥性能的优劣进行了评价.结果表明:编号为E的试样各项性能优良,是理想的铝电解槽用SiC火泥.
硅CAS号: 7440-21-3 EINECS号: 231-130-8 、铜CAS号: 7440-50-8 EINECS号: 231-159-6 、 锰CAS号: 7439-96-5 EINECS号: 231-869-6 、镁CAS号: 7439-95-4 EINECS号: 231-104-6 、 锌CAS号: 7440-66-6 EINECS号: 231-592-0 、钒CAS号: 7440-62-2 EINECS号: 231-171-1 、 钛CAS号: 7440-32-6 EINECS号: 241-036-9 、铋CAS号: 7440-69-9 EINECS号: 231-177-4 、
铬CAS号: 7440-47-3 EINECS号: 231-157-5
CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. They are also referred to as CAS numbers or CAS RNs.
Chemical Abstracts Service (CAS), a division of the American Chemical Society, assigns these identifiers to every chemical that has been described in the literature. The intention is to make database searches more convenient, as chemicals often have many names. Almost all molecule databases today allow searching by CAS number.
As of Nov 2, 2005, there were 26,901,696 substances in the CAS registry — the current number is published here. About 4,000 new numbers are added each day.
CAS registry number is separated by hyphens into three parts, the first consisting of up to 6 digits, the second consisting of two digits, and the third consisting of a single digit serving as a check digit.
2。 UN no. 才是危险品特有的。 运输都要有这号码。
UN numbers or UN IDs are four-digit numbers that identify dangerous goods hazardous substances and articles (such as explosives, flammable liquids, toxic substances, etc.) in the framework of international transport. Some hazardous substances have their own UN numbers (e.g. acrylamide has UN2074), while sometimes groups of chemicals or products with similar properties receive a common UN number (e.g. flammable liquid, not otherwise specified, have UN1993). A chemical in its solid state may receive a different UN number than the liquid phase if their hazardous properties differ significantlysubstances with different levels of purity may also receive different UN numbers.
UN numbers range from UN0001 to about UN3500 and are assigned by the United Nations Committee of Experts on the Transport of Dangerous Goods. They are published as part of their Recommendations on the Transport of Dangerous Goods, also known as the Orange Book. These recommendations are adopted by the regulatory organization responsible for the different modes of transport.
NA numbers (North America), also known as DOT numbers are issued by the United States Department of Transportation and are identical to UN numbers, except that some substances without a UN number may have an NA number. These additional NA numbers use the range NA8000 - NA9999.
Associated with each UN number is a hazard identifier, which encodes the general hazard class and subdivision (and, in the case of explosives, their compatibility group). For instance, the hazard identifier of acrylamide is 6.1 and the one of cigarette lighters is 2.1. If a substances poses several dangers, then subsidiary risk identifiers may be specified. It is not possible to deduce the hazard class(es) of a substance from its UN number: they have to be looked up in a table.
The hazard classes and their divisions are:
Class 1: Explosives
Division 1.1: Substances and articles which have a mass explosion hazard
Division 1.2: Substances and articles which have a projection hazard but not a mass explosion hazard
Division 1.3: Substances and articles which have a fire hazard and either a minor blast hazard or a minor projection hazard or both, but not a mass explosion hazard
Division 1.4: Substances and articles which present no significant hazard
Division 1.5: Very insensitive substances which have a mass explosion hazard
Division 1.6: Extremely insensitive articles which do not have a mass explosion hazard
Class 2: Gases
Division 2.1: Flammable gases
Division 2.2: Non-flammable, non-toxic gases
Division 2.3: Toxic gases
Class 3: Flammable liquids
Class 4: Flammable solidssubstances liable to spontaneous combustionsubstances which, on contact with water, emit flammable gases
Division 4.1: Flammable solids, self-reactive substances and solid desensitised explosives
Division 4.2: Substances liable to spontaneous combustion
Division 4.3: Substances which in contact with water emit flammable gases
Class 5: Oxidizing substances and organic peroxides
Division 5.1: Oxidizing substances
Division 5.2: Organic peroxides
Class 6: Toxic and infectious substances
Division 6.1: Toxic substances
Division 6.2: Infectious substances
Class 7: Radioactive material
Class 8: Corrosive substances
Class 9: Miscellaneous dangerous substances and articles
EINECS是已存在化学物品,全称为“欧洲已存在商业化学物品目录”,包括1981年9月以前上市的所有化学物品;新化学物品,全称为“欧洲已报告化学物品目录”(ELINCS),指1981年9月以后上市的化学物品。
CAS编号(CASRegistryNumber或称CASNumber,CASRn,CAS#),又称CAS登录号或CAS登记号码,是某种物质(化合物、高分子材料、生物序列(Biologicalsequences)、混合物或合金)的唯一的数字识别号码。
扩展资料
EINECS编号格式:
EINECS编号是一个7位的编号,样式为2XX-XXX-X或3XX-XXX-X,由200-001-8开始。ELINCS编号是一个7位的编号,样式为4XX-XXX-X,由400-010-9开始。EINECS/ELINCS/EC编号都可写成以下的样式:NNN-NNN-R123-456-0.
当中R是一个核对数而N是一个基本的数字。核对数R可以从以下方程式取得:当中Q是一个无意义的整数。
CAS编号格式:
一个CAS编号以连字符“-”分为三部分,第一部分有2到6位数字,第二部分有2位数字,第三部分有1位数字作为校验码。CAS编号以升序排列且没有任何内在含义。
校验码的计算方法如下:CAS顺序号(第一、二部分数字)的最后一位乘以1,最后第二位乘以2,依此类推,然后再把所有的乘积相加,再把和除以10,其余数就是第三部分的校验码。
举例来说,水(H2O)的CAS编号前两部分是7732-18,则其校验码=(8×1+1×2+2×3+3×4+7×5+7×6)mod10=105mod10=5(mod是求余运算符)。
参考资料:
百度百科-CAS
百度百科-EINECS
耐火泥浆的高温性能是指保证耐火砖在高温时工作的性能,其主要指标是:
(一)足够的耐火度
(二)足够的粘结强度,能在工作温度内将砌体结合成坚固的整体
(三)较小的干燥收缩和高温残余收缩值,力求高温使用后砖缝不开裂
(四显气孔率和透气度小,气密性好
(五)能抵抗煤气熔渣和铁水的侵蚀
(六)热膨胀系数与耐火砖一致。
还应考虑到火泥的烧结温度相当或略低于该部位的工作温度,使泥浆能在工作条件下烧结,并粘接耐火砖。但不能使火泥的耐火度低于该部位的工作温度太多,以致耐火性能不能适应砌体的要求。为此粘土或高铝)火泥按氧化铝含里分为不同的等级,砌筑高炉用的粘土或高铝)火泥与耐火砖一样,限制杂质成分的含里,特别是球磨过程中会使火泥的含铁里增加,所以规定砌高炉用的火泥中Pe203含里均不大于2 5%。
CAS(Chemical Abstract Service Numbers):化学文摘服务社编号(CAS);
在化工方面: CAS Registry Number或称CAS Number 又称CAS登录号。
是美国化学文摘服务社(Chemical Abstracts Service ,CAS)为化学物质制订的登记号,该号是检索有多个名称的化学物质信息的重要工具。是某种物质(化合物、高分子材料、生物序列(Biological sequences)、混合物或合金的唯一的数字识别号码。 美国化学会的下设组织CAS负责为每一种出现在文献中的物质分配一个CAS号,其目的是为了避免化学物质有多种名称的麻烦,使数据库的检索更为方便。如今几乎所有的化学数据库都允许用CAS号检索。到2005年12月25日,CAS已经登记了27,115,156种物质最新数据 ,并且还以每天4,000余种的速度增加。
格式 :一个CAS号以连字符“-”分为三部分,第一部分有2到6位数字,第二部分有2 位数字,第三部分有1位数字作为校验码。CAS号以升序排列且没有任何内在含义。校验码的计算方法如下:CAS顺序号(第一、二部分数字)的最后一位乘以1,最后第二位乘以2,依此类推,然后再把所有的乘积相加,再把和除以10,其余数就是第三部分的校验码。举例来说,水(H2O)的CAS号前两部分是7732-18,则其校验码=(8×1+1×2+2×3+3×4+7×5+7×6)mod 10=105 mod 10=5。(mod是求余运算符)。
CAS简而言之就是化学物质的学号。
PET成分就是聚对苯二甲酸乙二醇酯,Poly(Ethylene Terephthalare),又叫:聚脂, CAS NO: 25038-59-9 ;
单体一,组分是对苯二甲酸,CAS NO: 100-21-0;
单体二,组分是乙二醇,CAS NO: 107-21-1;
PVC(聚氯乙烯)Polyvinylchlorid,9002-86-2; 由氯乙烯聚合而成,CAS No.: 75-01-4 ;
OPP ,就是定向聚丙烯(薄膜),拉伸性的聚丙烯,其特征是:容易燃烧,火焰情况:熔融滴落,上黄下蓝,离火后烟少,继续燃烧。 OPP(英文是 Oriented polypropylene):定向聚丙烯(薄膜),是聚丙烯的一种;此外还有双向聚丙烯(BOPP)。 O(是 Oriented 的缩写)。
PP(聚丙烯), Polypropylene聚丙烯,聚丙烯和聚丙烯树脂 的 CAS 号:9003-07-0;
CPP,氯化聚丙烯树脂,氯化聚丙烯CPP,聚丙烯改性树脂。氯化聚丙烯(CPP)是聚丙烯改性制得的树脂,溶于甲苯等有机溶剂。因其与聚丙烯等材料制品有良好的粘附性,在油墨、涂料、粘合剂等各方面广为应用。CAS: 108-52-11;
PE(聚乙烯), polyethylene,CAS No.: 9002-88-4; 乙烯,CAS No.: 74-85-1
PS(聚苯乙烯)Polystyrene 聚苯乙烯,PS的CAS是 9003-53-6;苯乙烯的CAS是100-42-5;
ABS, Acrylonitrile Butadiene Styrene 丙烯腈-丁二烯-苯乙烯 共聚物,CAS是:9003-56-9;
PA(聚酰胺Polyamide):尼龙6,聚己内酰胺 只是聚酰胺的一个品种,聚己内酰胺的CAS No. 25038-54-4 ;
PC(聚碳酸酯Polycarbonate): CAS No.: 25037-45-0
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为了回答这个问题,已经投入了四五个小时。