Ammonium perchlorate has been pulverised by an impact mill (air classifier mill) to study the influence of different operating parameters, viz., effect of mill speed, classifier speed, …Web
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The terms perchlorate or perchlorate anion refer to a negatively charged group of atoms consisting of a central chlorine atom bonded to four oxygen atoms. Perchlorate has the molecular formula ClO4 . ... ammonium perchlorate, is produced in large amounts because it is used in rocket fuels. ... More than 90% of perchlorate taken in by mouth ...Web
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thermolysis of ammonium perchlorate (NH4ClO4) in vacuo in the temperature ranges of 493–553 and 653–723 K (Table 1). 7 The authors concluded that at low temperatures, only 30% of the reactant decays; the solid residue was found to be porous suggesting that the decomposition takesWeb
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Ammonium perchlorate (AP), NH 4 ClO 4, which is one of the most commonly used solid propellant oxidizers, is a strong oxidizing substance. It readily …Web
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The perchlorate anion consists of a tetrahedral array of oxygen atoms around a central chlorine atom. ... NF membranes have a nominal pore size of approximately 0.001 micron and require an operating pressure in the range of 80 to 150 psi. ... FMA; Larsen, CT; Pooler, PS. Ammonium perchlorate effects on thyroid function and …Web
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An oscillating mill, a pin mill and a jet mill are available for dry milling. Using the pin mill, ammonium perchlorate, ammonium nitrate or potassium nitrate can be milled to obtain …Web
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The oxygen bomb test results show that the micro-/nano-layered structure can significantly improve the sample's combustion heat value. ... Ammonium perchlorate (NH 4 ClO 4, AP) has been widely used in propellants and polymer-bonded ... the gap size was between 100–300 μm, and the thickness of the single layer is 50–200 μm. By further ...Web
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The TG/DSC study showed that nanosized β-Cu could be a promising additive for accelerating the thermal decomposition of ammonium perchlorate (AP). Nanoscale triaminoguanidine nitrate (TAGN) having average particle size of 218.7 nm was synthesized by Wang et al. [101] for accelerating the decomposition of AP based composition of …Web
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From April 2003 onwards, perchlorate has been manufactured and used in more than 150 industrial facilities throughout the United States and more than 90 perchlorate releases have been reported in ...Web
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Effects of Ammonium Perchlorate Particle Size, Ratio, and Total Contents on the Properties of a Composite Solid Propellant | Semantic Scholar. DOI: …Web
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The chemical formula for ammonium perchlorate, NH 4 ClO 4, indicates that it is composed of ammonium ions (NH 4+) and perchlorate ions (ClO 4– ). It is an inorganic compound that is odorless and colorless, appearing as a white crystal at room temperature. Its molar mass is approximately 117.49 g/mol. Solubility: Ammonium perchlorate is …Web
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The combustion of solid propellants is greatly dependent on the properties of ammonium perchlorate ... which is probably due to the vacant orbital in the transition metal atoms serving as bridges enabling acceleration of the electron transfer of ClO 4 ... The micro-sized aluminum powder (μ-Al, purity >99.9%, with the mean particle size of 5 ...Web
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In order to reduce the ignition temperature and improve the combustion efficiency of aluminum powder, three aluminum-based alloy fuels, Al–Mg, Al–Zn, and Al–Si–Mg, were prepared by the atomization method. The oxidation, ignition, and combustion performance of alloy fuels were investigated, and the results showed that, …Web
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The near surface of cleaved {210} planes of ammonium perchlorate (AP) was studied by nanoindentation. The crystals were etched to determine the {210} surface and the resulting etch pits were ...Web
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Nanometer (nano) ammonium perchlorate (AP) and ammonium nitrate (AN) were prepared with 2D network structures by the ultra-low temperature spray method. Scanning electron microscopy (SEM), X-ray diffractometry (XRD), differential scanning calorimetry (DSC) and thermogravimetric analysis/infrared spectrometry (TG …Web
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Therefore, in order to facilitate the research, the particle size of −0.15 + 0.038 mm in the grinding products of polymetallic complex ores is regarded as qualified particle size, the particle size of +0.15 mm is regarded as undergrinding particle size, and the particle size of −0.038 mm is regarded as overgrinding particle size [29,30,31].Web
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A method for preparing aziridine coated ammonium perchlorate (AP) of weightedian diameters (WMD) ranging from about 0.25 to about 5.0 micrometers is disclosed. The method employs either an unlined stainless steel or a polyurethane lined vibro-energy grinding mill wherein a high purity aziridine compound is used as the grinding aid and …Web
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In this review, an attempt to collect the summarised data of literature on catalytic effect of nano-oxides, such as mono oxides, mixed oxide, binary and ternary ferrites and rare earth metal oxides on the thermal decomposition of ammonium perchlorate (AP) is made. Influence of size effect of oxides on thermal decomposition of AP and comparison ...Web
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The effects of different types of nano-sized metal particles, such as aluminum (nAl), zirconium (nZr), titanium (nTi), and nickel (nNi), on the properties of a variety of solid rocket propellants (composite, fuel-rich, …Web
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The effect of mill rpm on ammonium perchlorate grinding is presented in Table 1 and Fig. 2. In these ... 5 0.75 5000 1000 38.48 35.58 2.90 7.53 Table 1. Effect of mill revolutions per minute on average particle size ... JAIN, et al.: PREDICTION OF PARTICLE SIZE OF AMMONIUM PERCHLORATE DURING PULVERISATION Thus, it is clear from Table 1 …Web
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Ammonium perchlorate was grinded up and activated in an Activator-2SL planetary mill (Company "Activator", Novosibirsk [23]) with steel balls and grinding bowls. Activator-2SL has two drums with a volume of 250 ml, the speed of rotation of the planetary disk is 1000 rpm, the speed of rotation of bowls is 1500 rpm.Web
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In addition, the length of the tumbling mill is 240 mm. The medium of the mill is iron ball with diameter of 25 mm. The critical rotational speed of the mill is 101.4 r/min. The type of grinding is wet milling. The power of tumbling mill is 0.55 kW. Particle size distribution of two types of ores' feeding samples are shown in Table 1.Web
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mill the size of atoms ammonium perchlorate 90 mill the size of atoms ammonium perchlorate 90 micro chines Ammonium perchlorate mill the size of atoms micro p. Home; Equipment; About; Contact; Email: [email protected] Our product. Trapezium Mill. High Frequency Screen. Wheel Sand Washing Machine.Web
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Ammonium perchlorate (AP) is a common oxidant in solid propellants, and its thermal decomposition characteristics at low temperatures (less than 240 °C) are key to the study of the thermal safety of propellants. Here, the low-temperature thermal decomposition characteristics of AP were investigated at 230 °C. The micromorphology …Web
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It is clearly shown that the as-prepared ammonium perchlorate crystals exhibit a high-index faced polyhedron morphology with uniform shape and narrow particle size distribution, the size of which ...Web
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A method for preparing ultrafine particle size ammonium perchlorate that has weight median diameters ranging from about 0.25 to about 5.0 micrometers and that is coated with an aziridine compound, said method comprising: ... iv. discharging said ammonium perchlorate slurry from said mill; and, ... Approximately 90% of the container opening is ...Web
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In order to improve the thermal decomposition performances of ammonium perchlorate (AP), the laminated AP composite was prepared by ice-template induced …Web
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Measurement of Particle Size of Ammonium Perchlorate Powder Through Sieve Analysis. Particle size of AP was measured by sieve analysis. Dry sieving is useful …Web
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