small cone teeth broken the frequency of daily use of small and medium-sized cone broken teeth phenomenon is the highest, probably for the following reasons.(1) The small cone design strength is small,brick making machine manufacturing quality requirements are lower.(2) small cone lubrication is bad, the meshing bad (especially on the 5th of furnace F coal mills), resulting in severe local wear, bubbling, material loss, further causing the local stress concentration, exacerbated by a broken tooth speed.(3) the load is too large,jaw crusher the initial production coal grinding mill ball add too much, resulting in the coal pulverizer current up to 130A or so, now reduced ball load current is maintained at about 120A (per 1t ball about current improve 1A). Two small teeth tooth surface wear gear surface generally bubbling, peeling, pitting and pitting, and small teeth tooth surface temperature is higher, making the coal grinding mill, cone wear more serious cause such The situation for the following reasons. (1) coal mill protection cover Mifengbuyan the.Coal mill hollow shaft with protective shield movement junction, did not install the seal inside the big cone into the gray intensified.The boiler preheater 3 sub-position type, all the way to the secondary air blower, the other road is a fan of hot primary air preheater heating surface from the gas side to carry accumulated due to time pressure is too high, gray away, blowing under the hot air system piping weld failed,mobile crushing causing a serious leak.Escape of dust into the exacerbated the wear of the gears within the gear guard. (2) positioning the lock.As a rule, along the teeth with tooth width measurements at both ends of the temperature difference is not greater than 8 鈩? maximum temperature of the tooth surface is not higher than 100 掳 C; normal measurement gap ministries into the positioning lock.When the temperature difference is greater than 8 掳 C, the appropriate elevation of the low temperature end of the bearing can be removed.Due to heavy workload and other reasons, not into the positioning lock, which is a tooth wear.Individual teeth tooth surface temperature is high, and both ends of the temperature difference is relatively large. , Mill small cone gear couplings damage to the coal mill small cone rigid rack coupling coal mill small cone severe vibration, gear couplings temperature of 260 掳 C, bearing west offset.The examination revealed that the coal mill gear couplings spring card is damaged, part of the tooth fracture, gear couplings scrapped. powder ore feed size of the pre-selected, relatively small, generally used for the separation of the breaking or crushing of products.
brick making machine:http://www.xbm-aac.com
The main purpose of pre-selection of fine ore is further separation of the dissociation of the gangue in the crushing process for the uneven distribution of the ore effect better.Crushed in-2mm fine particles and ore moisture is high, it will affect the sorting effect is sometimes used to handle minor operations in the sieve. Iron ore for Gongchangling done in fine crushing magnetic pulley preselected experiment, which,cone crusher small broken products, a direct selection by the magnetic pulley, respectively, to iron ore grade increased from 30.06% and 31.91% to 33.20% abandoned iron grade and 34.61% respectively 11.90% and 12.97%, the yields were 14.74% and 12.48% of the waste rock, concentrate total iron recoveries were 94.16% and 94.93%,Rotary kiln magnetic stickers recoveries were 97.50 %, and 98.27.Therefore, in the permanent magnet pulleys the preselection Gongchangling lean magnetite stone crushing products, basic feasible technically. Anhui coarse broken row of Knopp iron ore mines and the final fine minerals were large pre-screening and crushing preselection.Coarse mine waste ore particle size of about 150, pre-selected by the period of magnetic pulleys, ore grade from 23.48% to 24.65%, the concentrate recovery was 97.28%, the tailings grade of 8.71%; crushing sieve under the product particle size of 17mm pre-selected by the the Sec magnetic pulley, the ore grade increased alicey599 from 24.65% to 27.65%, the concentrate recovery was 93.17%; tailings grade of 7.12%.The two-stage pre-selected waste rock thrown a total of 20.88%, and achieved good pre-selection effect. Xingbang machine ReminderThe ball mill used by the pre-selection phase a considerable role in this link from the efficiency of the ball mill, ball volume and balls the size of the configuration will affect the effect of pre-selected, so this phase of implementation have professionals to guide the configuration device.
sand making machine:http://www.xb-machine.com/Crushing_Machinery/Sand-Making-Machine.html
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