Vallabhbhai Shamjibhai Patel tells about the ongoing construction of the Surat Diamond Bourse

The under-construction Surat Diamond Bourse (SDB) is India's second diamond trading hub based at Surat, Gujarat, spread across 35.54 acres with more than 4,000 offices for national & international traders. On the onset, the project which...

18 june 2018

The strategy of regulating the Russian jewellery industry

At the General Meeting of the Russian Jewellers Guild Association held in April, two principally important documents were adopted: The Strategy of Regulating the Jewellery Industry of Russia and The Charter of a Good Faith Taxpayer. Besides, the issues...

13 june 2018

Our first priority is to better understand artisanal and small-scale mining - Elodie Daguzan

The Diamond Development Initiative (DDI), the organization dealing with the traditional diamond mining, recently announced the appointment of Élodie Daguzan as its first Goodwill Ambassador. Ms. Daguzan, who currently works as head of communication...

04 june 2018

Zimnisky on De Beers’ Lightbox: It’s a strategic, bold move that will benefit the entire natural diamond industry

De Beers shocked all and sundry end of May when it announced the launch of a new company called Lightbox Jewelry, which will market a new brand of laboratory-grown diamond jewellery in September. This effectively meant that the group had departed from...

01 june 2018

Tracking the provenance and lifecycle of a product is a natural and necessary evolution in our industry

A senior executive with a demonstrated history of working globally at management and board levels, Marcus ter Haar has been the Managing Director at Okavango Diamond Company (ODC), Botswana for about 10 months now, prior to which he held the...

28 may 2018

Lucara improves diamond recovery method

13 september 2017
Lucara Diamond said it is in the final stages of commissioning the Mega Diamond Recovery (MDR) and new Sub-Middles XRT circuit in the Karowe plant, in Botswana.
“This is an area where the company is again setting the groundwork for a paradigm shift in the way diamonds are recovered, replacing the dense medium separation (DMS) plant and entire recovery process with a single machine,” Company chief executive William Lamb was quoted as saying by Mining Journal.
“One of the characteristics of the south lobe ore is the density of the kimberlite material.
“The XRT technology will allow us to continue to process material at the plant’s original design throughput with minimal capital expenditure versus installing additional DMS capacity and an enormous recovery plant to handle the concentrate.”
He said the Sub-Middles XRT circuit was primarily, along with the already installed XRT machines, responsible for the ore characteristics.
“The MDR, however, is as early as possible in the process flowsheet – in fact, directly after the primary crusher. Material from around 45mm up to 120mm is screened off for processing through the new MDR XRT circuit,” said Lamb.
“This system is designed for up-front value recovery. Prior to the large diamonds produced by the south lobe being exposed to areas where they could be potentially broken, we aim to recover them as soon as possible, thus preserving the value.”
Mining Journal also reported that Lucara was investing “heavily” in exploration and material testing at depth to secure Karowe’s future beyond the projected 2026 end of openpit extraction, and below the 320m pit plan.
It currently had an inferred resource of about 4Mct below the 6.3Mct reserve to 400m.

Mathew Nyaungwa, Editor in Chief of the African Bureau, Rough&Polished


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