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Show The Western Mineral Survey, Salt . What Are You Doing to Win the War? Coeur d'Alene Lead Company Reports On '421 , Processes based on the reaction, Ca(OH)2 and Mg (OH)2 and ' CaC12 arid' 2C02 Mgd2 and 2CaCo3 and. 2H20.T The caL cium and magnesium hydroxides., arerobtained by hydrating calcined dolomite, and in present practice the calcium" chloride, used is Of the Solvay soda a; byproduct ash ' process: ' Carboh dioxide Is available from the dolomite kiln gases; '.There are sOverpl possible variations in the process, depend-irigoWhether' theend "product desired is magnesium chloride or magnesium hydroxide. 'and dC: and grain pending upon the purity size of, the dolomite.- - If the dolomite Is too finegrained it nay be Impracticable to ; recover :the magnesium; content as' magnesi--. um hydroxide,' for the latter. becomes' fmore. gelatinous and .progressively harder t filter Wih decreasing dolpmite grain Sldje. The ...procesq ip" employed fjy wo firms for! magnesium metal; use.-- ' ;.4?' Dolomite Uls s calcined and i . y yALtCE," idahQI--PioductIo- n of Ihe,, Sherman. Lead Co., last year .was the .largest in its history says the annual report Production totaled 69,804 dry tons lastyear7 52,066 dry'"ton8In" i941 and 2b,280 dry joh8"ln . 1940. Zinc., conceptrate was,, produced . last year .for the first time '' since -- vi- washed:- With 4 .water, ...which, dissolves Net x'.' - -- !l . ferro-silico- . ' furnace linings policy.' of declaring dividendsbasic whenever in its opinion suclyac- eliminated - considerable tion is justified by the- - financial brick corbelipg - along' tnc front, furnacstatus of the company,'' the re back and end walls . -' . . es. dolomiteclaimed It is that ; adds. port 15 brucito-baslinings, If ' over inches: thick, can be safely ' rammed. directly on fireclay brick,; and that siich a bottom can be installed in less than half : the .. Continued From Page 1 ' time required' to burn In an all...... ... magnesite bottom, cutting fuel of .accumulation tivity prevents costs. 'electrical charges in objects being .; in baaic Recent moved oyer the floor, consequent- refractoriesdevelopments w.ere reviewed at the conference of the ly reducing- the 'danger of static twenty-fifth- are also re- Open-Heart-h and Blast Furnace . sparking. ,The floors Committees sistant to abrasive sparking! ac- and- - Raw Materials Section of Steel of and . the. Iron: Metallur-to Chemical and cording' American Institute of Mining gical Engineering, vol. 50, No.- 1, the aiid Metallurgical Engineers, held January 1943,' page 83. iij, April, 1942, at Cincinnati.. RamMagnesium metal was the .next med forcaustic-'calcinebottoms, in contradistinction d .largest direct outlet to the older permanent hearth of , Substantial .magnesite of mag- bricks . and. working surface quantities of caustic-calcinenesia wer.e iised'as a fertilizer, magnesite. were, shown, to have ota faster rebuild. , JBottQips 'particularly, in "Florida The syn- much : stabilized thetic'. rubber industry employed the-magnesia-chromit- e , or high-grad- e magnesia, derived clinker are a .section at a rammed, type from sea wateras a catalyst;-andimento time predetermined lower-grades- , obIncluding those A of sions.; . magnelayer, grain, tained, from magnesite, as fillers: or. grain dolomite may De 'magnesia was also con- site burned In oh top. of the permasumed in making 'solution. Other important nent hearth to serve on the work- -' caustic-calcinehearth, though this, addition d uses of magnesia ing ' were said to be. unnecessary... is in fusetTrefractory cements, boiler-wate-r The Bureau, of Mines published glass treatment, chemical reagents, and a summary of. methods for 'prov- ducing stabilized dolomite refracglue. ... ..ParticularRefractorshortages were felt tories: . Dolomite-Basof Alvin Bureau ies ; for in Schallis,. by perlclase but. production of peri- Mines Inf. Circ. 7227, 1942, 11 pag. of-the- . . e -- . . - . - - . . . . d cruQite-dolomil- e n, - industry-i- , nt -- . .un- f . - , . - er , - : . . . sea-wate- - 1 ,-- - sea-wat- d- -- . con-stitue- plants produced magnesi:, um : hydroxide from'. ;;sea water converted If o .the' chiorldeJ the aalts to : rhagpe- slum, metal. One i firm- - recover.ad magnesium j chlpride. Jrom well brines for "use inmakjng metal.: Magnesium-- : sulfate, and . magne-- . slum carbonate :werp also . recavr; ered; from weiL.brtnes! and epsom . salt. from a dry lake, : The production of precipitated magne-- ' magnesium carbonate siqm chloride; cnagnesiuni sulfate and magnesium hydroxide from r' magnesite, .dolomitebitterns, raw teep 'water; .'w?n brines . in' brines; and dry-lak- e the' Bureau 1942 was reported-tof Mines as 362,892 short iton?-- ' valued at $14,238,364, compared with' 103,906 tons valued at' in 1941. ' !Part of the; increase' in . the 1942 .figure . wSs ' causpd. by' . general . expansion in' output of virtually, all magnesl'im' compounds, . especially magnesium . chloride, and' part was due to the "inclusion in J9482 data of reclpitated magnesium carbonate from, dolomite, which, was not .Included jn. the. 1941 , figures. In neither year .do the figures .in-- , .elude, the magnesium: sulfate de.... . rived from magnesite. ', - n.- 1942. Two;magne3llirti' n mejtal. . process is used by six firms. 2.. Processes based' on the' Ca OH)2 andv Mg (DM)2 GaC12 and 2Mg and MgC12 (OH) 2. The Calcium and magnesium hydroxides are obtained by slaking calcined-- dolomite, - and the magnesium, chlofide is a of sea water and well' brines.' Calcium chloride may be added to well brines and bitterns before the milk of, dolomite Is added, in order to pre cipitate sulfate ions as synthetic gypsum, calcium sulfate, which Is 'sold as a byproduct. If this preliminary step is not used synthetic gyppum is reclpitated to. some extent with the magnesium hydroxide. The precaution Is with iaw sea. water, as the solution of salts is so dilute that any gypsum fprmed is regis-sdve- Two forms use the process for making refractory magnesia, 'ahd two in making magnesia, for J conversion to magnesium ' ? . & SONS W. F;.f: SNYDER 'i v: ' ' 'Mines metal.- - i r t i Felt Building, Solt toke City f t. O ; 1 v -- ) - , - Sea-water rayon-coagulat-in- g. Sbon I now . 11 ueSi ; . brick-making- high-quali- ty - . es.'".. . d doloShipments of mite in .1942, stimulated by requirements of the steel industry, were 15 per cent greater in quanthe record . levels attity than 1941. tained in Dolomite has long been used ns a basic refractory for open-heart- h maintenance and repair, averaging 5 to 8 times .the. quantity of magnesite - used zor refractory purposes. Only recently, however; has dolomite invaded the metal field, competing .with and supplementing magnesite . and brines as a source of magnesium . metal and magnesium dead-burne- WESTERN UINERAL SURVEY EAST 1ST SOUTH TEL Entered os second : class plotter at Salt Laks City, Utah under Act oi . March 3, 1879. , Ratee $2' rear In Subscription United States! $2.50' foreign; Si .00 for --' . six months. ' , mention . .Please Western. Ifineial Surrey when writing to advertisers. Ad- advertising .rate oh application. 22-2- 4 a' - -- - . .JOHN R. TALMAGE, Managing Edita 'All the' news of the development ot the intermountain Section, published by The 'Western Mineral Survey. All news appearing in the Western Mineral Survey ie obtained from eouicee believed to be reliable but no responsibility Is assumed for accuracy - - . of statements. - . u mr j . Stories of Early Day Camps Metal Markets Taxes Methods of Modern Mining - Tariff Problems Production Statistics - . coin-pounds- ;S; The following outline covers methods 'of recovering magnesi E..C. Comments' : . - dolomite which um values-frowere either in commercial use Labor ; FILL OUT AND MAIL THIS COUPON TODAY On Spme Gath, t- : 4. the Westiern Mineral Survey for authentic reports on Mining and Oil developments in the West. e - ' i nNAMnnnAnnMnnmimMnnMMUIMWUMlWAMMMinMWiAMHWMMMnmMMMIMMMMmUIMUUMIMMMUUUUWWUUUteteteWHteteMUHMHUMteWWMimUWMUWUUWUWWUUUUWUUUUUUUUM oCong. bidtance WESTERN MINERAL SURVEY 22 Vk East First South St., Salt. Loke City, Utah Operator WittSay: Please Limit Your ' Calls to 5 Minutes, Gentlemen: - . t Enclosed .find ,', .' . !. in payment far V ., . . scription to the WESTERN MINERAL SURVEY. ... Five Months others are waiting -- , ' One Year $1. 00. 'Two sub- .years ' , i $2.00; Foreign,! $2.50. Years-!-$3.- 00 I NAME rush on When there is an extra-heav- y certain busy long distance circuits, the operator will ask you to limit your calls to 5 minutes. a chance to That gives the make necessary calls. ..Tomorrow the next fellow may be you: next-fello- .j The Mountain States Telephone &. Telegraph Co, ' . " t ' f . .. STREET . 'J . - - , . .... - ' n i C; .. ' 1 " 1 1 4 ' . . ' . ,v. i eaoa9aaaaaSgat99a ' . N ' i e i CITY . : k . -- ' Expansion In magiesium chloride. production or. reduction to: magnesium.- metal was the chiefs feature of the magnesium f.salirteS -- : . . - - - .. . - v-y- this irm process v for making refractory ? , magnesia. . 5. Milk of dolomite is carbonated,: precipitating1 calcium car-b- o nate. which. Is" removed, leavin so-. ing, magnesium bicarbonate ..' ' . lution. . 1 (a) .The solution Is then heate-1-, precipitating a basic magnesium carbonate. This Is the Pattinson process, used At six plants. . (b) .The solution is neutralized with hydrochloric acid, Elding magnesium chloride.- This process is to be used by ohe plant. 6. Milk- of dolomite is reacted with' hydrogen sulfide, thereby dissolving the calcium as calcium bisulfide and leaving a precipitate ..of magnesium hydroxide which may be filtered' and- calcined .The method is used by one plant. 7. Milk of. dolomite is used instead of lime in the ammonia kilns, in the ammonia-sod- a process; ammonia: is driven off, leav dissolved. 79 as cbm pa fed-- ; with $80,717.85' in il941t. The decrease-- , isTafgely attributable, td ' the increase- it, labor cos.ts ' and - federal1 :,tas ciase V'm.--by new plants In 1943 from during 1942 or to be 'used in rates.'. sei water;, well brines,' and dolo- plants under construction in that .The company paid twb divi" is expected to .relieve the year. mite dends 'during' mb'. last year total: with reduction lvDlrect deficit:.; Ing $220,500. "The .board of metaL This to magnesium An use rammed increased of in 1943. will continue, its . - most- of thelime, t' leaving magnesia One-T. uses 1941 was S75J3U;, profit-in- . sd-calle- Carbon-dioxide-fre- e - -- - -- - . - - . . . n' . . ing magnesium hydroxide and magnesium pxide in .a. solution of calcium chloride.- - : The insolure ble 'magnesium ' compounds filtered' ofrandreacted with" hy- drochloric acid- to. yield magne- siuni chlpridle 'for conversion- - to. metal.1 The hydrochloric; acjd; a Joy product' of the., magnesium metal cell. This' !fa'qid process is used by,pne plant;The Bureau of tMines compiled in 1942 a list of occurrences aiid analyses ' of domestic high-- , Dolgrade dolomite:-.- High-grade omite Deposits in the. .United ; Bureau States John .ofMines Inf. Clrc.,7226, 1942, : . . .'Owing to a' complete. flotation problem involved, such'. a'differ--; " can be made-- , en.tiaL.Beparation ' is only when the rlnc : content ' above average, . says 'llie report :Thusfar' it has riot been, found desirable1;, .to . install additional .flotation .cells fori' separate- zinc1 .circuit. 3. , -- : July 2, 1943 City, UtoH Lok'e i . 1 . . |