Laboratory Leach Column

Laboratory Leach Column

  • Sepor - 050T-100 - 050T-205
  • The leaching column is made of PVC and stainless steel
  • It has a stainless steel solution tank with a sampling point
  • Both columns are equipped with stainless steel handles to facilitate the dismantling of the columns

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Two sizes of laboratory leaching columns for the mineral leaching test with the addition of the new 10" column


Description 

Now available, two sizes of laboratory leaching columns for the mineral leaching test with the addition of the new 10" column. The leaching column is made of PVC and stainless steel. It has a stainless steel solution tank with a sampling point, valves and a variable speed pump to easily regulate the flow rate of the solution. All pipes, piping, valves and columns are made of PVC. Leaching columns are designed to be easy to use and functional to test the leachability of ores for possible heap leaching recovery of metals. The 6" diameter column is suitable for leaching tests on ½" or finer size ores, while the wider 10" diameter column is suitable for 2" and finer size ores. Both columns are equipped with stainless steel handles to facilitate the dismantling of the columns.

Laboratory leach testing procedures include the studies of dissolving metal ions, with a acid, base, cyanide, or other chemicals. The leach column simulates the effects of heap leaching of a ore, in a controlled, lab environment, making data collection quick and easy. In order to eliminate any wall effect in the lab leach columns, the maximum size for each diameter of column should be followed. The 6”diameter by 72” in height column and 10” diameter by 79” in height leach columns are constructed of PVC , and the solution reservoir is constructed of stainless steel. A 10 mesh stainless steel screen may covers the drain plate, to prevent fine grained material from plugging the recirculation pump. The stainless steel drainage plate also serves to support the column of rocks.

A peristaltic pump with pvc tubing is used to re-circulate the leach solution. Samples may be easily collected of the leach solution, to monitor temperature, concentration, density, extraction of precious metals, as well as undesirable elements.

Catalog No.DescriptionShip Weight
050T-100Lab Column Leach, 6 Inch Column, 110 V/1 Ph/60 Hz or 220 V/1 Ph/50 Hz200 Lbs.
050T-205Lab Column Leach, 10 Inch Column, 110 V/1 Ph/60 Hz or 220 V/1 Ph/50 Hz450 Lbs.




The ores placed into the column should be screened prior to inserting, to determine particle size distribution, for later use comparing recovery to particle size. The time required to obtain maximum practical recovery is also an important element to monitor, for use in determining leach rates. Any additives, such as lime to maintain higher pH, should also be noted. And finally, the consumption of the leach solution should be recorded for each test, to determine projected leach consumption rates. Our Laboratory Column Leach System makes conducting lab leach test easy, efficient, and effortless. (Well, practically effortless)


Comparison of Column Capacities


Column SizeLeach Tank
Volume (Gal.)
Lbs. XCN to Add for .05% SolutionLbs. Ore in ColumnTop Size of
Ore (In.)
ml/Min Solution
6 inch11.000.5117 (@ 72″ Mark)0.5040
10 inch39.001.65360 (@ 79″ Mark)2.00110