Ling Yuquan iron ore mining capacity and later de

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Ling Yuquan iron ore mining capacity and the best post-mining to determine the level of

Section is quasi. Planned in June 1995 will be fully transferred to the advanced stage of the production sub-70m. 70m. 60m of the two segments can still be calculated according to the normal production capacity to 50m sub-loading and other reasons due to be flat, so the ability to reduce out of mine stope. 2) post-production accounting (1) the effective number of ore blocks to take the actual situation N i \L-60m. According to geological data: 70m sub-L =? ∞ m, 60m segment L = 230m. 50m sub L = l5m; that No = 3.4, N ¨ = 3.1, N50 = 2 (2) ore block to determine the utilization factor Kt: the 90m segment of the fall, the room in 5 1 ore . 2 each ore block E in the mine, in 8Om quasi sub-block formation of an ore, ore block utilization factor is 2 / 6 = 0.33. Methods similar to 70m, 60m (4) t in days for the 330d. (5) The majority of works arranged in quasi pulse, so z take l5. Based on the above analysis. The level of production capacity: Aa: Blue 15.8 (million l / a) / A =-- _ 『= a bamboo grove. 'Similarly, Aj population of H. d3 million t / I, Qu 93 000 t / a. 3) enhance the capacity verification by the analysis, the lifting capacity to 15 million t / a. Production in the 70m section l5 million t / a. 60m production of 140,000 t / a, 50m production of 90,000 t / a. 4 optimum exploitation level 1) c of the Panel to determine, according to current indicators are: bad ore price 180 yuan / t, geological grade of 46.76, dilution rate l7, bad ore grade 66. Metal recovery eO%, mineral processing fees of 32 yuan / t. Ground transportation costs included in the cost of mining. Not separately. Generation (5), we have: 22 Nie Mine Design and Construction Box 1991 l muscle of cl8o × 9-32 = 63.26 (yuan / t) 2) to determine the cost increment △ c (I) △. : Known 6m down winch hoisting equipment power l30kW. Speed of 2m / s. Efficiency 8O. The △ c-a tiny Buddhist monk's robe was reported post-wilt = o. 06mc7-15 / convex. - Ou Lai hundred hundred-u. (T) (2) △ c $: normal production period. 100m. 70m pump starting power w-j40 ~ kW. t-2; the level of construction in the late {0m submerged pump 5 pumps installed. Starting power w-= 1256kW. : I7h; yield point cut to 607t / d. {IIt / d. Ie = (7】 404 × 20607)) (0.26 = 0.52 (RMB / t) (3) △. T: actual production. As the level of support in a cost of ~ difficult environment juice. Jade mining Iron Ridge to take the total material consumption of 6.23 for the support like refuse J.fl1] Kj = 1.3.90 '80m sub-branch expansion rate are taken into I.29 yuan / 【. △ = (1. a 1] × 1.29 元 / t) (I) △ 0; under Yuquan Ling Kan ore from the actual situation. compressed air, ventilation, taking the cost of the total power cost of 18 +7. ie K = 1.13-9O ~ 80m section The average cost of compressed air ventilation to take 4.52 yuan, t. △ = (1.13 A 1) x4.52 'yuan / t) (5) K to determine: the actual iron ore by Wang Quanling. Take K = 1.1. So. Reduce the cost of m-level delta mining: △ c a [0. , 52 +0.06 m + (1.3 A 1) × 1.29 + (1.13 A 1) × 4. s2-l × 1.13) to determine the level of the pad will stop mining on the value into (6) have :63.26-58 .66 + [o. 52 +0.06 m + (1-3 a 1) × 1.2g4-(1.13 ~ 1) × 4.52] × 1. Im3 obvious. Ling Yuquan the best iron ore mining level: ti \Now we come to examine the 50m if the total benefits of mining the middle of the Ore sales of all processed into flour. The above analysis was: D-Dg0 + D8. + D0 + D6. + D {. = 47.6 × 13.33_ BU 46.9 × 4.6-t - 4O. 6. × 2.89 +33.9 × I. 99.4 -0 a l035 (million) can be seen, the best in the 50m level to determine the level of exploitation. Full recovery of mineral resources in the case. In addition to compensation for investment in infrastructure, but also core profit】 0.35 million yuan, that is reasonably practicable
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