Aluminum granulated

Ferrovanadium can also be prepared by the thermite reaction, in which vanadium and iron oxides are co-reduced by aluminum granules in a magnesite-lined steel vessel or in a water-cooled copper cmcible (11) (see Aluminumand aluminum alloys). The reaction is initiated by a barium peroxide—aluminum ignition charge. This method is also used to prepare vanadium—aluminum master alloys for the titanium industry. 

Eighteen grams of iodine, heated to about 180°C are sublimed over 60g of aluminum granules (about 10 mesh) heated at 500-625°C in vacuo or a slow stream of nitrogen or carbon dioxide. Several types of apparatus have been suggested -8 (these may be used also for Fela and Sil ). The almost white product sublimes into the receivers a large excess of metal is used to ensure complete use of the iodine. 

In a 2000-mL three-necked flask fitted with a reflux condenser, a 500-mL pressure equalizing dropping funnel, and a mechanical stirrer, 107.9 g (4 mol) aluminum granules were heated with 20 mL of dibromomethane and 120 mL of dichloromethane to 40° until reflux begins. After the reaction begins, a further 880 mL of dichloromethane are added within 1 hr. The... 

The aluminum granules (purchased from Riedel de Haen) were heated in vacuo at 100 to 150 for 12 hr. 

Aluminum granules are a component of some drain cleaners because they react with sodium hydroxide to release both energy and gas bubbles, which help clear the drain clog. The reaction is... 

Aluminum metal reacts rapidly with highly basic solutions to liberate hydrogen gas and a large amount of heat. This reaction is utilized in a popular solid drain cleaner that is composed primarily of lye (sodium hydroxide) and aluminum granules. When wet, the mixture reacts as follows ... 

Plasticity, and hence granulation efficiency, varies considerably with the nature and proportion of feed materials. Pure salts, such as potassium chloride and ammonium sulfate, lend Httle or no plasticity and thus are difficult to granulate. Superphosphates provide good plasticity. The plasticity of ammonium phosphates depends chiefly on the impurity content of iron and aluminum. The higher the impurity the greater the plasticity. In some cases, binders such as clay are added to provide plasticity. 

Manganese metal made by this process is 99.9% pure. It is in the form of irregular flakes (broken cathode deposits) about 3-mm thick, and because of its brittleness, has Httle use alone. Most of the electrolytic manganese that is used in the aluminum industry is ground to a fine size and compacted with granulated aluminum to form briquettes that typically contain 75% Mn and 25% Al. 

Zeolite Pellets or granules of aluminum silicate, used in water treatment or aircleaning applications. 

Magnesium-Aluminum Powder Composition and Granulation Requirements. MS... 

Zeolites are naturally occurring hydrous aluminum-sodium silicates in porous granule form. They are capable of exchanging their sodium base for calcium or magnesium and of expelling these alkaline earth metals for sodium by treatment with salt. Thus, they are a type of ion-exchange media. (Some zeolites act as molecular sieves by adsorption of water and polar compounds.)... 

Citrocarbonate Effervescent Granules—sodium bicarbonate, sodium citrate anhydrous Di-Gel Liquid—aluminum hydroxide, simethicone, saccharin, sorbitol, parabens... 

Figure 9. Stabilizing effect of methylcellulose on foams generated by a suspension of effervescent antacid granules containing magnesium trisilicate and aluminum hydroxide...

Bentonite is the name for a hydrous aluminum silicate comprised principally of the clay mineral montmorillonite, notable for its ability to swell in water and to form a very low-permeability seal." It is available as powder, granule (chip), or pellets. Powder and granule sizes are produced by processing after mining. Bentonite powder... 

The PET and aluminum chips require further drying so that they can be electrostatically separated. This is the most expensive part of the entire process. "The aluminum cap is only 1% by weight of the bottle," explains Dittman, "but the equipment to remove it represents about 30% of the investment in the plant. It s out of balance, and we are trying to remove the aluminum more cheaply." The process-which at the CPRR plant can handle about 600 lb per hour, or a potential capacity of about 5 million lb per year—generates clean, well-separated (99.9%) granulated plastic chips that can be sold to a manufacturer who uses the resins. 

Place 100 g. of finely powdered pyrolusite, Mn02, in a Hessian crucible and heat it in a gas furnace to convert it into Mn304 (the reaction with Mn02 is too violent). Weigh the Mn304 thus obtained and mix it with a little less than the weight of granulated aluminum required for its reduction ... 

Mix 100 g. of granulated aluminum with 90 g. of clean line sand and 90 g. of sulfur. Place the mixture in a fire-clay crucible embedded in sand in a safe place and ignite with fuse powder and a magnesium ribbon, as described in Exercise 85. After the reaction is completed, allow the crucible to cool. Break the crucible, put the contents in an evaporating dish, and treat with water to decompose the aluminum sulfide. This should be done under the hood so that the copious fumes of poisonous H2S will be carried off. Wash away the slimy lumps of melted aluminum from such foreign matter as pieces of crucible. Place these pieces of metal in a beaker, gradually treat with commercial hydrochloric acid until the action has quieted down, then cover with the acid and let stand on the hot plate for several days,... 

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