Hammer mill offers affordable lime
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Jere, Raphael. 2005. Hammer mill offers affordable lime. Spore 119. CTA, Wageningen, The Netherlands.
Permanent link to this item: http://hdl.handle.net/10568/48024
Internet URL: http://spore.cta.int/images/stories/pdf/old/spore119.pdf
As many farmers know, agricultural lime can be used to correct soil acidification, with the aluminium and manganese toxicity that goes with it, and the poor yields that result. Lime is an inexpensive mineral and in Zambia it is found throughout the countr
As many farmers know, agricultural lime can be used to correct soil acidification, with the aluminium and manganese toxicity that goes with it, and the poor yields that result. Lime is an inexpensive mineral and in Zambia it is found throughout the country. The greatest expense for this important agricultural input is transportation, making localised lime production a promising avenue for cutting costs. With this in mind, the Technology Development and Advisory Unit (TDAU) of the University of Zambia joined up with the British Geological Society on a project called Local Development of Affordable Lime in Southern Africa. The scheme aimed to develop low-cost, small-scale production of lime for agriculture and water treatment. In response to the challenge, TDAU engineers have developed a portable hammer mill, which was originally used to mill grain and has now been modified to mill minerals, in this case agricultural lime. To date, more than a dozen Zambian farmers and entrepreneurs have bought portable hammer mills and set up mobile production units of lime for their own use or for sale to local communities. Business owners wanting to manufacture portable hammer mills can enter into an agreement with the TDAU. The market price is about 1,860 per unit. Raphael Jere Technology Development and Advisory Unit University of Zambia PO Box 32379 Lusaka Zambia