Automated sample collection apparatus

• US 7,721,897 B2
• Filed: 08/16/2007
• Issued: 05/25/2010
• Est. Priority Date: 08/16/2007
• Status: Active Grant

• Current Assignee: Kennecott Utah Copper, LLC (Rio Tinto Limited)
• Original Assignee: Kennecott Utah Copper, LLC (Rio Tinto Limited)
• Inventors: Quapp, Kevin, Woolley, Randy P.
• Primary Examiner(s): Rogers; David A.
• Application Number:
  US11/839,660
• Publication Number:
  US 20090044642A1
• Time in Patent Office: 1,013 Days
• Field of Search: 738/639.1, 738/639.2, 738/644.1, 738/644.3, 738/645.1, 209/2, 209/655, 209/656, 209/691, 209/707
• US Class Current: 209/695
• CPC Class Codes: G01N 1/04 in the solid state, e.g. by cutting

Abstract

An apparatus and method for collecting, sorting and storing samples from multiple batches of copper cathode is disclosed. Samples are collected at a sampling station and transferred to a collection container. The samples are then transferred to a sorting container by way of chutes forming a continuous path from the collection container to the sorting container. The sorting container is affixed on the top surface of an automated carousel having a plurality of sorting containers for sorting samples from multiple batches. Samples in the sorting containers are recovered into storage containers through an access door panel and a funnel placed beneath the access door.

Claims

1. An apparatus for collecting, sorting and storing samples, the apparatus comprising:

A. A carousel comprising a plurality of sorting containers,

B. Means for rotating the carousel,

C. Means for transferring samples from a sampling station located apart from the carousel to the sorting containers, and

D. Means for transferring samples from the sorting containers to storage containers located apart from the carousel.

2. The apparatus of claim 1 in which the carousel comprises top and bottom surfaces, each surface having inner and outer areas, and in which the sorting containers 41 are buckets spaced apart from one another on the outer area of the top surface of the carousel.

3. The apparatus of claim 2 in which the buckets are evenly spaced apart from one another.

4. The apparatus of claim 2 in which the means for transferring the samples from the sampling station to the sorting containers comprises a collection container and first and second chutes, the first chute located between and in open communication with the collection container and the second chute such that samples taken at the sampling station are collected in the collection container and transferred to the sorting containers through the first and then second chutes.

5. The apparatus of claim 4 in which the collection container (a) is attached to and moves with the sampling station, and (b) comprises (i) a housing defining a collection volume and having a closed bottom fitted with at least two trap doors and an open top, and (ii) at least one diverter plate with each plate dividing the collection volume into smaller volumes, one trap door defining at least a portion of each smaller volume.

6. The apparatus of claim 5 in which the collection container contains a single diverter plate dividing the collection volume into two smaller volumes of approximately equal size.

7. The apparatus of claim 4 in which the first chute further comprises (i) a vibrator for assisting the movement of samples through the first chute, and (ii) a clear panel through which the samples can be observed as they pass through the first chute.

8. The apparatus of claim 7 in which the first chute is affixed to a latitudinal set of rails that allow for the first chute to move in a longitudinal direction relative to the sample.

9. The apparatus of claim 8 in which the second chute (i) is not affixed to the first chute, (ii) comprises open entry and exit ends, and (iii) the exit end is positioned above the outer area of the carousel such that samples can pass from the first chute into the buckets.

10. The apparatus of claim 9 in which the sorting containers are affixed to the top surface of the carousel by a pivot rod assembly, the pivot rod assembly comprising (i) a pivot rod, and (ii) means for fastening the pivot rod to the top surface of the carousel such that the sorting container can pivot freely about pivot rod.

11. The apparatus of claim 10, the apparatus further comprising (i) an operator station, the operator station comprising an operator control panel, and (ii) an access door assembly separating the operator control panel from the carousel.

12. The apparatus of claim 11 in which the access door assembly is located opposite the second chute.

13. The apparatus of claim 12 in which the access door assembly comprises an access door panel comprising (i) a wall, (ii) a door, and (iii) a funnel located beneath the door such that when the door is open, samples from a sorting container can be transferred to a storage container by rotating the sorting container about the pivot rod so that the samples flow from the sorting container through the funnel into the storage container.

14. The apparatus of claim 11 in which the means for rotating the carousel comprises an electric motor in a power transfer engagement with a gear box in a rotational engagement with a fastening plate attached to the top surface of the carousel.

15. The apparatus of claim 14 in which the means for rotating the carousel further comprises control software.

16. A method for collecting, sorting and storing samples taken from multiple batches of copper cathode, the method comprising the steps of:

A. Collecting samples from a first batch of copper cathode at a sampling station, and transferring the first samples to a first collection volume of a collection container comprising first and second collection volumes;

B. Collecting samples from a second batch of copper cathode at a sampling station, and transferring the second samples to the second collection volume of the collection container;

C. Transferring the first samples from the first collection volume of the collection container to a first sorting container through first and second chutes, the first sample moving through a first trap door in the collection container into the first and second chutes, and moving through the chutes due to at least one of (i) gravity, and (ii) vibration imparted to the first chute by a vibrator, the first sorting container pivotally affixed to a carousel;

D. Rotating the carousel to position a second sorting container beneath the second chute to receive the second samples from the second chute, and then opening a trap door beneath the collection container such that the second samples in the second volume of the collection container exit the second volume and enter the first chute and move through the first and second chutes due to at least one of (i) gravity, and (ii) vibration imparted to the first chute by a vibrator, such that the second samples enter the second sorting container, the second sorting container pivotally affixed to the carousel;

E. Rotating the carousel such that the first sorting container containing the first samples is positioned to a location removed from the second chute;

F. Transferring the first samples from the first sorting container to a first storage container by pivotally rotating the first sorting container such that the first sample flows due to gravity from the first sorting container to the first storage container;

G. Rotating the carousel such that the second sorting container containing the second samples is positioned to a location removed from the second chute; and

H. Transferring the second samples from the second sorting container to a second storage container by pivotally rotating the second sorting container such that the second sample flows due to gravity from the second sorting container to the second storage container.