Chemical sand

Carryover of oils (e.g., compressor lube oils), brine, corrosion inhibitors, well treating chemicals sand, corrosion scales, etc., from inlet separator... 

Fire Hazards - Flash Point Not pertinent (ignites spontaneous) Flammable limits in Air (%) Not pertinent Fire Extinguishing Agents Dry chemical, sand, powdered limestone Fire Extinguishing... 

Fire To control small fires use dry chemical, sand, soda ash or lime or fight fire around the biological agent or weapon with normal fire extinguishing materials, but do not spread or scatter infectious substance. If without risk, move any containers containing anthrax or any other infectious substance from the area of the fire. 

Calcium Cyanide — Fire Hazards Flash Point (deg. F) Not flammable Flammable Limits in Air (%) Not flammable Fire Extinguishing Agents Use dry chemical, sand or earth on adjacent fires ... 

A basic ferric sulphate under the name of chemical sand is used commercially to neutralise the alkali present in waste soap lyes from which the glycerine is to be recovered. It is manufactured by mixing dry and finely powdered iron ore (oxide) with concentrated sulphuric acid, and allowing the fluid mass to spread out on an iron floor. When solidification has taken place, the mass is broken up and heated at a temperature of 200° to 280° C. for some hours, when it is ready for use, and consists essentially of ferric oxide and ferric sulphate.10... 

Diethyl2inc Not pertinent (ignites spontane- ously) Not pertinent Not pertinent Dry chemical, sand, or powdered limestone Water, foam, haloge-nated agents, carbon dioxide Reacts spontaneously with air or oxygen, and violently with water, evolving flammable ethane gas. Contact with water applied to adjacent fires will intensify the fire <0 Reacts violently to form flammable ethane gas ... 

Alkaline Chemical Sand Alkaline Consumption (ineq/lOO g)... 

Small fires dry chemical, sand, earth, water spray or regular foam... 

The main component of sandstone reservoirs ( siliciclastic reservoirs ) is quartz (Si02). Chemically it is a fairly stable mineral which is not easily altered by changes in pressure, temperature or acidity of pore fluids. Sandstone reservoirs form after the sand grains have been transported over large distances and have deposited in particular environments of deposition. 

Using a multiple linear regression computer program, a set of substituent parameters was calculated for a number of the most commonly occurring groups. The calculated substituent effects allow a prediction of the chemical shifts of the exterior and central carbon atoms of the allene with standard deviations of l.Sand 2.3 ppm, respectively Although most compounds were measured as neat liquids, for a number of compounds duplicatel measurements were obtained in various solvents. 

Alternative feedstocks for petrochemicals have been the subject of much research and study over the past several decades, but have not yet become economically attractive. Chemical producers are expected to continue to use fossil fuels for energy and feedstock needs for the next 75 years. The most promising sources which have received the most attention include coal, tar sands, oil shale, and biomass. Near-term advances ia coal-gasification technology offer the greatest potential to replace oil- and gas-based feedstocks ia selected appHcations (10) (see Feedstocks, coal chemicals). 

Decomposition of Zircon. Zircon sand is inert and refractory. Therefore the first extractive step is to convert the zirconium and hafnium portions into active forms amenable to the subsequent processing scheme. For the production of hafnium, this is done in the United States by carbochlorination as shown in Figure 1. In the Ukraine, fluorosiUcate fusion is used. Caustic fusion is the usual starting procedure for the production of aqueous zirconium chemicals, which usually does not involve hafnium separation. Other methods of decomposing zircon such as plasma dissociation or lime fusions are used for production of some grades of zirconium oxide. 

Sihceous matter other than clay may occur in the free state as sand, quartz fragments, and chert, and in the combined state as feldspar, mica, talc (qv), and serpentine. Metallurgical and chemical limestones should contain less than 1% alumina and 2% siUca. 

Heat Treating Sand and Permanent Mold Magnesium Castings, bull. no. 141—552, The Dow Chemical Co., Midland, Mich., 1987. 

The ocean is host to a variety and quantity of inorganic raw materials equal to or surpassiag the resources of these materials available on land. Inorganic raw materials are defined here as any mineral deposit found ia the marine environment. The mineral resources are classified generally as iadustrial minerals, mineral sands, phosphorites, metalliferous oxides, metalliferous sulfides, and dissolved minerals and iaclude geothermal resources, precious corals, and some algae. The resources are mosdy unconsoHdated, consoHdated, or fluid materials which are chemically enriched ia certain elements and are found ia or upon the seabeds of the continental shelves and ocean basias. These may be classified according to the environment and form ia which they occur (Table 1) and with few exceptions are similar to traditional mineral deposits on land. 

Petroleum refining, also called petroleum processing, is the recovery and/or generation of usable or salable fractions and products from cmde oil, either by distillation or by chemical reaction of the cmde oil constituents under the effects of heat and pressure. Synthetic cmde oil, produced from tar sand (oil sand) bitumen, and heavier oils are also used as feedstocks in some refineries. Heavy oil conversion (1), as practiced in many refineries, does not fall into the category of synthetic fuels (syncmde) production. In terms of Hquid fuels from coal and other carbonaceous feedstocks, such as oil shale (qv), the concept of a synthetic fuels industry has diminished over the past several years as being uneconomical in light of current petroleum prices. 

Mechanical Gleaning. A cleaner is a hydrocyclone device utilizing fluid pressure to create rotational fluid motion (20). Pulp is introduced tangentially near the top of the cleaner. Contaminants denser than water such as chemically treated toner inks and sand migrate toward the outer wall of the cleaner and exit in a separate (reject) stream. For most forward cleaners, optimal ink removal efficiency is obtained at a pulp consistency of 0.2—0.3%. Most forward cleaners deinking efficiency declines at pulp feed consistencies greater than 0.4%. However, a cleaner said to be efficient at 1.2% pulp consistency has been reported (39). 

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