| 61. |
- Forssberg, Eric, et al.
(författare)
-
Pilot plant trials of new gravity concentration equipment
- 1987
-
Ingår i: Minerals & metallurgical processing. - 0747-9182. ; 4:2, s. 87-89
-
Tidskriftsartikel (refereegranskat)abstract
- In this technical note, pilot-scale tests with two types of gravity concentrators, the Knelson separator and the Mark VIIA Reichert spiral concentrator are described. The experimental work was concentrated on the relatively untried Knelson separator. The materials tested have different concentration characteristics: one was an artificial ore with excellent liberation characteristics and a wide difference in density between valuable and gangue minerals; the others include a spiral concentrate containing gold from the gravity circuit of Boliden, Sweden, an old scheelite tailing from Yxsjoberg, Sweden, and an auriferous ore containing gold that had not been crushed to full liberation. The latter three materials contained other heavy minerals, e. g. pyrite, that can interfere with concentration.
|
|
| 62. |
|
|
| 63. |
- Forssberg, Eric, et al.
(författare)
-
Pulp chemistry measurements in sulphide mineral flotation
- 1987
-
Ingår i: Erzmetall. - 0044-2658. ; 40:4, s. 189-195
-
Tidskriftsartikel (refereegranskat)abstract
- This project involved flotation of copper-lead, zinc and pyrite concentrates from a complex sulphide ore. Pulp chemistry measurements were made for determination of sulphur anion, total sulphur, carbon dioxide, calcium and xanthate concentrations as well as chemical and biological oxygen demand, pH, redox potential, oxygen content and temperature. The relation of pulp chemistry to flotation result was studied.
|
|
| 64. |
- Forssberg, Eric, et al.
(författare)
-
Quantitative model for the residence time distribution and its application in studying the Malmerget plant grinding system
- 1986
-
Ingår i: Scandinavian journal of metallurgy. - 0371-0459 .- 1600-0692. ; 15:1, s. 41-48
-
Tidskriftsartikel (refereegranskat)abstract
- A quantitative model for the residence time distribution (RTD) in tumbling mills is derived. This model has a relatively simple form described in terms of only three characteristic parameters, which can be easily generated from multiple regression analysis by computer. The advantages of the model are very easy to understand and quite convenient to use for predicting the transport behavior of particles flowing through tumbling mills. More than 500 experimental data points obtained from industrial and pilot scales fit the model with sufficient accuracy.
|
|
| 65. |
- Forssberg, Eric, et al.
(författare)
-
Recovery of metals from shredded television scrap
- 2008
-
Ingår i: Proceedings of XXIV International Mineral Processing Congress. - Beijing : American Science Press Inc.. - 9787900249548 ; , s. 3461-3468
-
Konferensbidrag (refereegranskat)
|
|
| 66. |
|
|
| 67. |
|
|
| 68. |
- Forssberg, Eric, et al.
(författare)
-
Shape and liberation studies on grinding products from autogenous and conventional mill using an automatic image analyser
- 1985
-
Ingår i: Scandinavian journal of metallurgy. - 0371-0459 .- 1600-0692. ; 14:6, s. 283-288
-
Tidskriftsartikel (refereegranskat)abstract
- Samples were collected from the Stekenjokk and Malmberget concentrators, operated by Boliden Mineral AB and Luossavaara-Kiirunavaara AB respectively. The Stekenjokk ore consists of massive pyrite with disseminated chalcopyrite and sphalerite; it assays 1. 4 % Cu and 3. 2 % Zn. The Malmberget ore mainly contains magnetite with a coarse-crystalline structure; run-of-mine ore assays are about 40 % Fe and 0. 6 % P. Using an automatic image analyzer, it appears that fully autogenous grinding down to flotation fineness results in better liberation and particle shape for flotation than is obtained with a combination of primary autogenous and ball mill grinding. Fully autogenous grinding also creates smoother particle surfaces.
|
|
| 69. |
- Forssberg, Eric, et al.
(författare)
-
Shape and surface properties of the particles liberated by autogenous grinding
- 1985
-
Ingår i: Scandinavian journal of metallurgy. - 0371-0459 .- 1600-0692. ; 14:1, s. 25-32
-
Tidskriftsartikel (refereegranskat)abstract
- Autogenous grinding produces rounded particles with higher degrees of liberation and equiaxiality and lower roughness. These properties result in a higher grade concentrate and better recovery. Autogenous grinding is consequently more economical.
|
|
| 70. |
- Forssberg, Eric, et al.
(författare)
-
Stabilization of mineral processing wastes
- 1992
-
Ingår i: Emerging process technologies for a cleaner environment. - Littleton, Colo : Society for Mining, Metalurgy and Exploration. - 873351061 ; , s. 223-227
-
Konferensbidrag (refereegranskat)
|
|
