ARKOMON XP 1014 Delivers Excellent Blast Results Using
Transcription
ARKOMON XP 1014 Delivers Excellent Blast Results Using
ARKOMON® XP 1014 Delivers Excellent Blast Results Using Low-Grade, Porous Ammonium Nitrate CASE HISTORY THE BOTTOM LINE Clariant Mining Solutions partnered with an explosives manufacturer to custom design the high quality ARKOMON® XP 1014 emulsifier to consistently work with low-grade, low-density Ammonium Nitrate (LDAN) to… CLARIANT MINING SOLUTIONS performance and value delivered. 2750 Technology Forest Blvd. The Woodlands, TX 77381 USA Phone +1 281 465 9100 BENEFITS Significantly reduce crystal formation Increase in-hole gassed sleep time Deliver consistent blast results Reduce emulsion droplet size Increase blast program management flexibility OBJECTIVES An explosives manufacturer in Indonesia tasked Clariant with developing a new, custom-designed emulsifier that eliminates large crystal formations and improves blast consistency when using low-grade AN bulk explosives. Clariant developed testing procedures using a microscopic quantitative approach for lab trials to achieve reliable, accurate and consistent test results. The goal of the project was to create more stable emulsions, using the low grade and highly variable AN sources and yet, still provide higher velocities of detonation than the current emulsifier. www.mining.clariant.com COPYRIGHT © CLARIANT INTERNATIONAL LTD 2014 BACKGROUND Operating in one of the most competitive markets in the world, an Indonesian explosives manufacturer serving the mining industry switched to using a low-grade AN bulk explosive for its blasting program as part of a cost reduction initiative. Immediately following the change, the explosives manufacturer experienced significant crystallization with its emulsifier, which led to poor blast performance, and switched to an emulsifier the company had used previously. However, the company still experienced crystallization issues and inconsistent blast performance with the competitive emulsifier. The explosives manufacturer supplied material to customers who drilled up to 500 holes in their blast patterns and depended on the explosive to offer a maximum seven-day sleep-time. It was imperative the company offered a dependable explosive product for its customers’ load-and-shoot blasting programs. However, reaction between the competitive emulsifier and sodium naphthalene sulphonate crystal modifier/anti-caking agent led to significant crystallization of the emulsion during the one-to five-day sleeptime period. This interrupted the relationship between the fuel and oxygen, resulting in inconsistent blast performance, poor muckpile uniformity, high downstream processing costs and increased NOx fumes. As Clariant technologists worked through emulsifier trials with the customer, they discovered that the commonly used “feel” testing procedure for determining the amount of crystallization was too subjective to give accurate, repeatable and comparative results for selecting the best performing emulsifier, since the act of rubbing the emulsion between the fingers itself can cause crystal formation. Using Clariant’s global resources and experience in the emulsions industry, a more quantifiable testing procedure was developed that was able to determine the amount of crystallization. ACTIONS Sodium naphthalene sulphonate is commonly used by manufacturers of low-grade ammonium nitrate as a crystal modifier/anti-caking agent. Clariant discovered that the quantities added of this agent varied widely even within the same product. 2 CLARIANT MINING SOLUTIONS performance and value delivered. 2750 Technology Forest Blvd. The Woodlands, TX 77381 USA Phone +1 281 465 9100 www.mining.clariant.com COPYRIGHT © CLARIANT INTERNATIONAL LTD 2014 Clariant tested varying percentages of diesel fuel oil and recycled oil as well as a variety of ARKOMON emulsifiers as part of the research program. Technicians collected uniform sample sizes of un-gassed and gassed explosives using the various emulsifiers at predetermined intervals, and the explosive sample was kept at a constant temperature for uniformity. This ensured a high degree of statistical significance for trials and laboratory tests. In head-to-head testing against competitive products, three, one-week trials were conducted to test the performance of different ARKOMON emulsifier formulations against the customer’s current emulsifier. Five ARKOMON formulations passed the quantitative crystallization tests, showing only negligible to moderate crystal formations after nearly a month. By contrast, the competitive emulsifier failed the quantitative tests, exhibiting moderate crystallization within five days and heavy crystallization after nearly a month. Clariant’s ARKOMON XP 1014 was selected as the best performing emulsifier. ARKOMON XP 1014 Good result – negligible crystallisation Phase contrast Microscope 40X Gassed 5 days 3 CLARIANT MINING SOLUTIONS performance and value delivered. 2750 Technology Forest Blvd. The Woodlands, TX 77381 USA Phone +1 281 465 9100 www.mining.clariant.com COPYRIGHT © CLARIANT INTERNATIONAL LTD 2014 RESULTS Working closely with the explosives manufacturer, Clariant Mining Solutions developed a tailor-made emulsifier that is proven to give longterm stability in the hole when using low-grade AN with a sodium naphthalene sulphonate crystal modifier/anti-caking agent. By using ARKOMON XP 1014, the explosives manufacturer Has the best performing emulsifier on the market to minimize crystallization when using low-grade AN Can source lower quality AN to reduce costs Achieves desired blast results using low-grade AN Delivers blast consistency and better blast management in the field Has a 20% smaller and more stable emulsion droplet size than the CLARIANT MINING SOLUTIONS performance and value delivered. competitive emulsifier 2750 Technology Forest Blvd. The Woodlands, TX 77381 USA Can offer a significant reduction in blast failure costs with Phone +1 281 465 9100 their customers www.mining.clariant.com COPYRIGHT © CLARIANT INTERNATIONAL LTD 2014 This information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. 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