ارتباط با ما
با ما تماس بگیرید
0086-21-58386256
0086-21-58386256
Apart from the textile industry, other heavy metal toxicities releasing industries are mining, electroplating, metal processing, battery manufacturing, tanneries, petroleum refining, paint manufacture, pesticides, pigment manufacture, and photographic industries. 15, 16 World health organisation (WHO) and Environmental protection ...Web
remove antimony from ores and concentrates containing gold. The use of one or another method of processing antimony-containing ores and concentrates depends on the antimony content in them and its form of location (Table 1). Antimony metallurgy is intended for the production of metallic antimony by pyrometallurgical and …Web
Antimony is a silvery-white metal that is found in the earth's crust. Antimony ores are mined and then mixed with other metals to form antimony alloys or combined with oxygen to form antimony oxide. Little antimony is currently mined in the United States. It is brought into this country from other countries for processing. However, there are companies in …Web
Antimony trichloride is used in the manufacturing flame-proofing compounds as well as paints, ceramic enamels, glass and pottery. Other uses include ball bearings and mixing with alloys with percentages ranging from 1 to 20 greatly increasing the hardness and mechanical strength of the lead.Web
The largest end use for antimony trioxide is as a fire retardant in plastics, rubbers, textiles, paper and paints (Mannsville Chemical Products Corp., 1981). ... Occupational exposure may occur during mining, processing …Web
About Antimony. Antimony (symbol Sb from the Latin word stibium) is a silvery white metal. Antimony oxide is primarily used in fire-retardant formulations for plastics, rubbers, textiles, paper and paints, whereas Antimony trisulfide is used in the production of explosives, pigments and antimony salts.Web
Cellular Mechanisms Associated with Antimony Entry and Processing Antimony enters the cells via aquaporin channels [ 207, 208, 209 ]. More specifically, it has been proven that Sb(III) enters the cells through the GlpF aquaporin channel in Escherichia coli, the same channel that mediates the entry of As(III) into that organism [ …Web
Antimony trichloride is used in the manufacturing flame-proofing compounds as well as paints, ceramic enamels, glass and pottery. Other uses include ball bearings and mixing with alloys with percentages …Web
Antimony toxicity occurs either due to occupational exposure or during therapy. ... rubbers, textiles, paper and paints whereas antimony trisulfide is used in the production of explosives ... With dramatic improvements in working conditions in antimony processing and stringent guidelines antimony has largely ceased to be a common …Web
Antimony is classified as a critical/strategic metal. Its primary production is predominated by China via pyrometallurgical routes such as volatilization roasting—reduction smelting or direct reduction smelting. The performance of most of the pyro-processes is very sensitive to concentrate type and grade. Therefore, technology …Web
Table 7.1 Indices of Refraction of Some Common Paint Materials _____ Material Refractive Index _____ Rutile titanium dioxide 2.76 Anatase titanium dioxide 2.55 Zinc sulfide 2.37 Antimony oxide 2.09 Zinc oxide 2.02 Basic lead carbonate 2.00 Basic lead sulfate 1.93 Professor Bassam El Ali 12 CONSTITUENTS OF PAINTS PigmentsWeb
8.3.1 Pharmaceutical Use. Antimony-based compounds have been used to treat certain protozoan parasitic diseases. The potassium tartrate and sodium tartrate forms of antimony have been used extensively in the past on a global basis as antischistosomal drugs (Cooper and Harrison 2009; ATSDR 1992), and the pentavalent form of antimony, …Web
The element is used in alloys, as a constituent of paint pigments, and in rubber compounding. Very pure antimony is used to make certain types of semiconductor devices such as diodes and infrared detectors. ... The working conditions in antimony processing have improved markedly over the last 30 years and the workforce has been much …Web
Antimony oxide: Sb 2 O 3: : 2.09–2.29: Pigment White 12: Zirconium oxide: ZrO 2: : 2.4: Pigment White 13: Bismuth tungstate: Bi 2 (WO 4) 3: 1: 2.17: ... silica is not used as a white pigment but is an essential extender pigment and processing aid in paint. The main functions of silica in paint are:Web
The element is used in alloys, as a constituent of paint pigments, and in rubber compounding. Very pure antimony is used to make certain types of semiconductor …Web
Concentrations of antimony have been determined for paints and enamels that are available to the consumer or accessible to the public by x-ray fluorescence …Web
Human Exposure. In the United States, antimony (III) trioxide (Sb 2 O 3) is the most commercially significant form of processed antimony. In nature, Sb 2 O 3 exists in minerals such as valentinite and senarmontite ( ATSDR 2017; Roper et al. 2012 ). Antimony is found in nature in these and other mineral species, often in association with arsenic ...Web
Potential Alternatives to SCCPs in Polyvinyl Chloride Processing. Alternative substances. Chemical substances that can be used to replace SCCPs in polyvinyl chloride (PVC ) applications include: Acrylic polymers Alumina trihydrate. Aluminum trihydroxide, used in conjunction with antimony trioxide (ATH) Aluminum trioxide. Antimony trioxide (or ...Web
Antimony trioxide (ATO) is added to textiles, plastics, rubbers, paper, and paints as a fire retardant [3]. Antimony compounds were historically used therapeutically in antihelminthic and antiprotozoic treatments; ... This is the process of radioactive disintegration or radioactive decay, discussed in Chapter 3.Web
Colorants are natural or synthetic additives — including dyes and pigments — which impart color, hiding power, and specialized physical attributes to a finished substance or product. In addition to color, they may add bulk, durability, and corrosion resistance to an intended substrate. The video below briefly discusses the use of ...Web
1. Background. Antimony is a silvery, white, brittle, crystalline solid that exhibits poor conductivity of electricity and heat. It has an atomic number of 51, an atomic weight of 122 and a density of 6.697 kg/m 3 at 26 °C. Antimony metal, also known as 'regulus', melts at 630 °C and boils at 1380 °C.Antimony and the natural sulfide of …Web
paints, textiles and rubber. Most commercial grades of antimony trioxide contain between 99.2% and 99.5% antimony trioxide with ... The mineral processing of antimony Originally antimony was mined and hand sorted to effect con-centration. Since the bulk of primary production is in China, whereWeb
When antimony trichloride vaporizes, heat releases, and an explosion of white clouds occur. This is a very dangerous process, as antimony trichloride fumes are toxic. When inhaled, it causes irritation in the mouth, nose, throat, and lungs. ... which is an inorganic pigment that is used for paint. It creates colors ranging from a darker ...Web
In industry, antimony enters the body almost entirely by inhalation of dust or fumes from processing or packing antimony compounds. Absorption from the respiratory tract and lungs of inorganic compounds is very slow and limited by their insolubility. Physical and chemical properties of antimony Antimony compounds are fairly widespread on the sur-Web
Antimony has a variety of applications in paints, glass and ceramicware that are available to the consumer and accessible to the public. It is commonly encountered in old domestic paints as an anti-chalking agent but appears to be limited to contemporary consumer paints of a speciality nature where the metalloid is used as a fastener for ...Web
It is used mainly in fire-retardant formulations for plastics, rubbers, textiles, paper and paints. It is also used as an additive in glass and ceramic products and as a catalyst in the chemical industry. Occupational exposure may occur during mining, processing and smelting of antimony ores, in glass and ceramics production, and …Web
400 to roughly 16 companies. China is not only the top producer, also boasts the majority of antimony but processing facilities, 7. somewhat analogous to China's role in REEsproduction. 8. Due to its ability and capacity to process a major portion of the world's antimony, China's downward trend in mining antimony production has notWeb
The antimony is extracted during the lead refining process in the form of sodium antimonate. Properties. Antimony is a very hard, brittle and bluish-white metal with a highly distinct crystalline texture. Antimony is not an abundant element but is found in small quantities in over 100 mineral species.Web
Antimony is also used for pigments in plastics, paints, rubber, and for a wide variety of minor uses, including medicines, fireworks and others. Antimony oxide is a brilliant yellow color, accounting for much of the pigment use. A tiny amount of highly purified antimony metal is used in the computer industry to make semiconductors.Web
Antimony trisulfide, which reflects infrared radiation, is a constituent of camouflage paints. Burning antimony trisulfide emits a dense white smoke, which is used in visual fire control, marine markers, and visual signaling (Herbst . et al., 1985). The vermilion or yellow antimony trisulfide is used as a pigment, in the manufacture ofWeb
6 102 coupled plasma spectrometry (Turner, 2019b). Successive measurements were made at 50 kV-103 40 A and 20 kV-100 A and employing a thickness correction of between …Web
Valuable residues are obtained by processing of gold, copper, and lead ores with high contents of antimony. Most of these residues are currently discarded or …Web
Antimony is a silverly, lustrous grey metal that exhibits poor heat and electrical conductivity. It is relatively soft, measuring only 3.25 on Moh's scale of mineral hardness. Known as "stibium" in classical Latin, antimony is represented by the chemical symbol Sb. A member of the arsenic group of elements, antimony is commonly found in ...Web
This has sparked efforts to find secondary sources of antimony either through the recycling of end-of-life products or by recovering antimony from industrial process …Web
Other minor uses include paint pigments (Sb 2 O 3, Sb 2 S 3, Sb 2 S 5), semiconductors (e.g., AsSb, GaSb, InSb), IR-reflecting camouflage paints ... The processing of antimony ores and the production of antimony metal is also concentrated in China, due to its high smelting capacity. Most of the antimony industry in Europe and …Web
