Ferro magnesium

The distinction between light and dark micas became almost synonymous with "potassium micas" and "ferro-magnesium micas". 

An alternative commercial form of a metallic mixed lanthanide-containing material is rare-earth siUcide [68476-89-1/, produced in a submerged electric-arc furnace by the direct reduction of ore concentrate, bastnasite, iron ore, and quart2. The resulting alloy is approximately 1/3 mischmetal, 1/3 sihcon, and 1/3 iron. In addition there are some ferro-alloys, such as magnesium—ferrosilicons, derived from cerium concentrate, that contain a few percent of cerium. The consumption of metallic cerium is overwhelmingly in the mixed lanthanide form in ferrous metallurgy. 

Both silicon and aluminium are added to zinc to control the adverse effects of iron. The former forms a ferro-silicon dross (which may be removed during casting). Aluminium forms an intermetallic compound which is less active as a cathode than FeZn,] . Similarly in aluminium and magnesium alloys, manganese is added to control the iron . Thus in aluminium alloys for example, the cathodic activity of, FeAl, is avoided by transformation of FeAlj to (Fe, Mn)Al/. This material is believed to have a corrosion potential close to that of the matrix and is, therefore, unable to produce significant cathodic activity . 

The electrical conductivities of soln. of a great many compounds in liquid hydrogen halides have been measured by E. H. Archibald and D. McIntosh. The conductivity is raised considerably by phosphoryl chloride. Sodium sodium sulphide, borate, phosphate, nitrate, thiosulphate, and arsenate chromic anhydride potassium nitrate, hydroxide, chromate, sulphide, bisulphate, and ferro- and ferri- cyanide ammonium fluoride and carbonate j rubidium and caesium chloride magnesium sulphate calcium fluoride ... 

The following metals have been suggested for this purpose magnesium, aluminium, zinc and also silicon sometimes ferro-silicon, alumino-silicon and calcium silicide are also employed. Deissler [54] was the first (1897) to recommend aluminium as a component of explosives. He was followed by Goldschmidt [55], Escales [56], von Dahmen [57] and Roth [58], In later years Kast [59] investigated military explosives which contained aluminium. 

Actinolite— A mineral in the amphibole group, a calcium magnesium (iron) silicate with the chemical formula Ca2(Mg,Fe)5Sig022(0H)2. The mineral occurs as a series in which magnesium and iron can freely substitute for each other. Actinolite is the intermediate member when iron is predominant the mineral is ferro-actinolite and when magnesium is predominant, the mineral is tremolite. The iron produces a green color that darkens as the iron content increases. Actinolite may occur in fibrous form (an asbestos). It is not used commercially, but is a common impurity in chrysotile asbestos. 

Calcium-silicon, ferro-silicon, silicon, silicon carbide, magnesium, zinc and its alloys, copper, and the rare metals have all been the subjects of patents regarding the production of ellccts similar to those of aluminium. 

Synpro [Ferro], TM for aluminum, calcium, lithium, magnesium, and zinc stearates. 

Nuodex Magnesium Stearate Food Grade t[Ferro http //www.ferro.com]-, Petrac Magnesium Stearate MG-20 T[Ferro/Polymer Add it. http //www.ferro.com]-, Petrac Magnesium Stearate MG-20 NF [Ferro/Polymer Addit. http //www.ferro.com], Synpro Magnesium Stearate 90 [Ferro/Polymer Addit. http //www.ferro.com], Synpro Magnesium Stearate Food Grade (Kosher) [Ferro/Polymer Addit. http //www.ferro.com]... 

Barium sulfate Kaolinite Novaculite pigment, extender flame retardant coatings Magnesium hydroxide pigment, extender primers/coatings Ferro-aluminum silicate... 

The route shown in Fig. 9.12 is one which has been operated commercially in the U.K. on a fairly small scale, quite successfully. As in the case of niobium, it is convenient to use the crude ferro alloy as feed to the chlorination stage. The chloride purification stages lead to pure vanadium trichloride, which is reduced with magnesium in a manner similar to that employed for titanium, zirconium or hafnium. Some of the complexities, applicable in the latter processes owing to the volatile nature of the chlorides, are absent with vanadium. The vanadium metal sponge has some properties in common with the other metal sponges. 

White silver cyanide, thiocyanate, ferro- and yellow ferricyanide are decomposed with production of ignition-resistant silver. All metal ferro- and ferricyanides of the base metals leave a residue of ferric oxide and the particular metal oxide. For instance, the colorless ferrocyanides of zinc, cadmium, magnesium, calcium, barium, strontium, thorium etc. become yellow-brown Prussian blue and Turnbull s blue become dark (Fe304) and, later, brown (FegOg). Cupric ferricyanide (brown) and cupric ferrocyanide (violet-brown) are blackened when ignited because of the formation of cupric oxide. 

---