REP24011

• Permit No: M1977215
• IBM Index Class Name: Report
• Doc Date: 10/27/1997
• Doc Name: UPPER AND LOWER TAILING PONDS AT THE BULLDOG MINE CREEDE COLO
• From: SHEPHERD MILLER
• To: HOMESTAKE MINING CO
• Media Type: D
• Archive: No

OCT-29-96 TUE 12:37 PM SHEPHERD MILLER FAX N0. 970 223 7171
' 331 • D. w, Hbw and J. L Jambor •
into the ptarticks ro a nwviog rcaation front were
developed try Dww and ltrraaa (1986, 198'/) and
Dwvo a1. (1986). The siavplat d tha modals as
apptoalma4 atsatytial sttladon (Dwvts and Rrtatu.
1986). Thn tnedd assumes that all sulAde partido
~a'itltia the waste ate equfll)r teoetlve reprdtms of
ttlcterakp. arc spherical, d oee sme, and riot a
single di$usioa me»ttleac an be tmi~ted m the
todre ~ickeeta of uatacmated tatliags. Given these
nstmpdom, the problem tedaco ro a accts dean7y
solved egtacan. All of the pttrameten requited to
solve shoe equadom oft be nseasced hero 6dd
smpks.
The egtaoom that form the basis for this apprari-
mate analycml solncoa (Dww a~ I{st~. 1946)
eau be rsitlen as
rr(s1)'I-z(1 ~~ OsrsX(r) (4)
a(zt) _ (l f (s~ ~) X(r) s s s l (~
rherc:
S:.6yDt(1-P)Ltl(at~ (6)
r = dimemiodess titttc (r/r_J - -
4 = d'imemlanless time ro react a pardde u
the tatTmgs sorlare
u = dtaxmionkss @ygm oonaenLntion
s - dmmtLdookss depth (z•/L) -
x' =depth (m)
X(r) = t6mcmiedess tkpth d plater mo.mg
bout _ _
X'(Q ~ position d planar ttmvittg pons riddn
the dump (m) , _.
and X(t) na be twad thtongb svitttioa d the tnm-
cendcntal tonmon

The parattteten required ro solve these egoatiom
ale:
Dt = tlltALtioa coe&dam rithm the pore
grsce d the dtwp (m= s t)
D7 = dt$taioo mcf6tieot .rida~m the particles
(me s-t)
p = porosity d the ndm' g
tb = meal oa7grn mtrcentration ai the taiF -
ietR surface (1<R m-s)
t =meal thictmns d rho tallt'ags
r e particle d-umeter
r = mass oCOaygal used per mass datltJltr
m the oxidation teaetien
0. = demiry of sul[>Q m the nsiags (kg m-s)
y = ptoportiooalrty mtLmnt eommpaautg
O! these panmetgs, D=. ae. L, a. r. 0., aed y eaa
be aswmed onsrmt for the wain Attwlm tailio8a.
Tba adened meatant value roe each o[ these pam-
nrtsn k pttnentad k Tabk 1. Ot the tetnaimag
f/~e~. P ran aladated direedy ham field
meamtenteae and DI vu esdaured 6om field
tneutvemeatt asitq the ttrodlhotioa m the esd-
ttutbm teethed propwed Dy Mti.LO~tittaet and
Sttr,~ (1971) rLOOmmerded by Mwct+ussort and
Rwstsrtnon (198s), and ufiaa the eatimaben tech-
ttpueproposed by itrtaaot+ sad MootstJl (1985).
For throe eta (WAIL. wA17 sad WA33) the
paomeren Dt am1 p ran e.in.l+~•+ hero &Id
measwemeats s.eraged ovtt the upptt b an d the
~, the Ikpth arrwdy a$eaed by sulfide osi-
datiea The btld den and the akaktM patarneters
are prarnted m Tabk 3.
b(nwred sad o(talated gat-phtse 0. pto6ka arc
prnwoed m Fig. 6. The latter tepreseat 'bar fit"
praise abhiaed b7 varying DI while tnaintaiomg a0
athtr patametrs masnttt. The Dt value aced to
abtaia this bee tit (Tabk 3) ate within ooe order of
mat~de d the olatated Ot value.
The oxygen d$utiviry (Dt) a maagly dependent
on the xtoponfly vatiabk rttoisntre merest of the
tal7mgs The «wismre mnteut std pttooxtttration
meimrementt [ep[eamt single mr~an~...•ms etude
io late Nov®ba, ahtt the autumn nits, rlteo the
tttaisnae mmmt d the upper tailings was high.
Considering the ••^'^*•t^ties is the plruoatt au-
matioas and the depth avttagiag of the patametas,
the agceemmt between the orygen di$mion coef-
fieiear, Dt, nkolated using the method of MILL-
wattnt sad Slawau (1971). the method d ltawtmow
Table L Comtaa paramree+s used io the model of Dww
and tttmm (1980)
Puameter Value Sours
Dr 26x10-~a mti t 2
ua o.~asajoi t 1
L Iom Z
• O.000Z m 2
r
A 1.7.6
I.Ox IOt ka m's 1
3
y 0.07 I
1. From Dww and Rrttsa[ (19a6J,
2. Fa...doo.
i araamed
Table 7. variable paramaers med in lbe mold of Dww
and Rrraue (1986)
1'faaotneter test ww-l l ww-17 ww-a
' ' 't
DI (m=s ) 1.7x10- !.9 : 10- 80 x 10
(ItGaDOM and MeoaLr)
Ot Imri ') 6.0 x 10'a 1! x 10-r !~ x l0-r
(MttlaNTnM fed SHW[a)
Di (mr'-~) 3.0 x l~r
(asad
0
d) a2 x !O-' 7.0 x 10-~
e
e
y (a) Il0-370 E6a6W 1a0~60
P. 23
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