﻿154 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  The 
  Lake 
  Sanford 
  ores 
  carry 
  about 
  15 
  per 
  cent 
  Ti0 
  2 
  on 
  the 
  

   average. 
  They 
  are 
  probably 
  the 
  most 
  regular 
  in 
  titanium 
  content 
  

   and 
  highest 
  in 
  iron 
  of 
  the 
  Adirondack 
  ores. 
  By 
  employing 
  them 
  

   in 
  mixture 
  in 
  the 
  proportions 
  of 
  say 
  1 
  to 
  2 
  or 
  1 
  to 
  3, 
  the 
  titanium 
  

   of 
  the 
  ore 
  charge 
  could 
  be 
  brought 
  down 
  to 
  three 
  per 
  cent 
  or 
  less. 
  

   Their 
  low 
  phosphorus 
  and 
  sulfur 
  would 
  make 
  them 
  specially 
  valu- 
  

   able 
  for 
  that 
  purpose. 
  

  

  Another 
  feature 
  which 
  may 
  promote 
  the 
  use 
  of 
  the 
  ores 
  from 
  

   that 
  locality 
  is 
  their 
  amenability 
  to 
  concentration, 
  whereby 
  the 
  

   titanium 
  can 
  be 
  reduced 
  by 
  at 
  least 
  a 
  third 
  of 
  the 
  total, 
  or 
  to 
  less 
  

   than 
  6 
  per 
  cent 
  probably 
  as 
  maximum 
  limit. 
  To 
  the 
  courtesy 
  of 
  

   F. 
  E. 
  Bachman, 
  General 
  Manager 
  of 
  the 
  Northern 
  Iron 
  Co., 
  the 
  writer 
  

   is 
  indebted 
  for 
  information 
  concerning 
  an 
  experimental 
  run 
  made 
  

   upon 
  Lake 
  Sanford 
  ores 
  at 
  the 
  Mineville 
  magnetic 
  concentrating 
  

   plant 
  within 
  the 
  past 
  year. 
  A 
  40 
  ton 
  sample 
  was 
  passed 
  through 
  

   one 
  of 
  the 
  mills 
  and 
  the 
  concentrates 
  showed 
  the 
  following 
  per- 
  

   centages: 
  Fe, 
  60.60 
  per 
  cent; 
  Ti0 
  2 
  , 
  9.66 
  per 
  cent 
  (equivalent 
  to 
  5.8 
  

   per 
  cent 
  Ti). 
  The 
  tailings 
  from 
  the 
  treatment 
  gave: 
  Fe, 
  42.84 
  per 
  

   cent; 
  Ti0 
  2 
  , 
  32.22 
  per 
  cent. 
  A 
  sample 
  of 
  the 
  concentrates 
  recrushed 
  

   so 
  as 
  to 
  pass 
  through 
  a 
  16 
  mesh 
  screen 
  and 
  reconcentrated 
  by 
  

   hand 
  showed 
  the 
  following 
  percentages 
  on 
  analysis: 
  

  

  Fe 
  ~ 
  63 
  

  

  Si0 
  2 
  1.08 
  

  

  Ti0 
  2 
  5.25 
  

  

  A1 
  2 
  3 
  5.65 
  

  

  Another 
  sample 
  was 
  crushed 
  through 
  a 
  40 
  mesh 
  screen 
  and 
  sub» 
  

   jected 
  to 
  separation 
  under 
  water 
  with 
  a 
  hand 
  magnet. 
  Analyses 
  

   of 
  the 
  concentrates 
  are 
  given 
  below: 
  No. 
  1 
  is 
  by 
  A. 
  S. 
  McCreath 
  & 
  

   Son, 
  and 
  No. 
  2 
  by 
  P. 
  W. 
  Shimer. 
  

  

  1 
  2 
  

  

  Fe 
  65.35 
  64.69 
  

  

  Mn 
  

  

  Si0 
  2 
  

  

  Ti0 
  2 
  5-32 
  6.49 
  

  

  A1 
  2 
  3 
  2.76 
  2.59 
  

  

  CaO 
  

  

  MgO 
  

  

  P 
  .012 
  -0045 
  

  

  S 
  

  

  While 
  it 
  would 
  scarcely 
  be 
  practicable, 
  perhaps, 
  to 
  crush 
  the 
  ore 
  

   to 
  a 
  size 
  that 
  would 
  permit 
  a 
  reduction 
  of 
  the 
  titanium 
  to 
  the 
  

  

  65 
  

  

  •35 
  

  

  

  .186 
  

  

  

  .14 
  

  

  5 
  

  

  •32 
  

  

  2 
  

  

  .76 
  

  

  

  •05 
  

  

  

  .76 
  

  

  

  .012 
  

  

  

  .041 
  

  

  