Сэдэв: Optimizing Material Sourcing: HighCapacity Screening Solutions for Lagos Quarry Operations

1. PAINPOINT DRIVE NOLEING

Lagos quarry operators face a specific set of logistical and operational pressures. The demand for highgrade granite and aggregates for commercial construction in Lekki, Epe, and Ikorodu continues to outpace supply, yet your margins are squeezed by three persistent challenges:

• Inconsistent Feed Quality: Runofmine (Омын) material from local pits often contains high clay content and variable moisture levels (1525%), leading to blinding and pegging of conventional screens. This causes unscheduled downtime costing an estimated ₦850,000–₦1.2 million per hour in lost production.
• Торгуулийн бохирдол: Inability to effectively remove minus5mm fines from your ¾inch and ½inch products results in rejected loads at the weighbridge, with rehandling costs adding ₦400–₦600 per ton to your operating expenses.
• Дамжуулалтын саад бэрхшээл: Your current circuit struggles to maintain 250–300 tons per hour (Цагдаа) during peak demand, forcing you to turn away contracts for the Eko Atlantic or Dangote refinery projects.

Is your current screening equipment engineered to handle the specific abrasiveness (Мох хатуулаг 67) and highmoisture conditions of Lagos granite, or is it costing you contract penalties?

2. БҮТЭЭГДЭХҮҮНИЙ ТОЙМ

Тухайлах ялгац гишүүн HeavyDuty Inclined Vibrating Screen (Model LQS2460) is a primary classification unit designed specifically for the highthroughput, highwear environment of Lagos quarry sites. It processes ROM material after primary jaw crushing, delivering precise separation for concrete aggregate and asphalt base courses.

Үйл ажиллагааны ажлын урсгал:
1. Тэжээл: ROM материал (0300мм) is fed via conveyor onto the screen’s heavyduty feed box.
2. Давхаргалалт: Material travels down the 6.0m x 1.5m deck at a 20° incline, driven by a dualshaft exciter generating 6.5 Gforce.
3. Анхдагч тусгаарлалт: Top deck (50мм диафрагм) scalps oversize (+50мм) for recirculation to the secondary cone crusher.
4. Secondary Separation: Bottom deck (12mm or 19mm aperture) separates base course material from minus12mm fines.
5. Ахах: Three product streams (хэт том, үндсэн хуучин мэдүүлэг, нарийн торгог) are directed to stockpile conveyors.

Хэрэглээний хамрах хүрээ: Suitable for dry and wet screening of granite, гнейс, ба кварцит. Хувьсгал: Not designed for sticky clay content exceeding 30% without a prewash system; maximum feed temperature 60°C.

3. ҮНДСЭН ОНЦЛОГ

HighTension DualShaft Exciter | Техникийн үндэслэл: Synchronized counterrotating shafts generate linear motion | Үйл ажиллагааны ашиг тус: Eliminates material pegging in 12mm apertures, тэр ч байтугай цагт 18% чийг | ROI нөлөө: Reduces screen blinding downtime by 70%, сэргэж байна 46 hours of production per week

AR400 Wear Liners | Техникийн үндэслэл: Элэгдэлд тэсвэртэй ган (400 Бринеллийн хатуулаг) on feed box and side plates | Үйл ажиллагааны ашиг тус: Extends service life in highimpact zones to 2,500 operating hours vs. 800 hours for standard mild steel | ROI нөлөө: Жилийн доторлогооны солих зардлыг бууруулна 62% (saving approx. ₦3.8 million per unit per year)



Modular Polyurethane Deck System | Техникийн үндэслэл: Injectionmolded polyurethane panels with 40% нээлттэй талбай | Үйл ажиллагааны ашиг тус: Reduces noise to 82 дүүдэр(Аг) and allows 15minute panel replacement without welding | ROI нөлөө: Eliminates 8hour downtime for traditional wire cloth changes; increases uptime by 3.5%

Variable Angle Adjustment (15°25°) | Техникийн үндэслэл: Hydraulic jack system for deck angle modification | Үйл ажиллагааны ашиг тус: Optimizes material retention time for varying feed moisture levels | ROI нөлөө: Improves screening efficiency from 85% нь 94% on wet days, reducing fines carryover by 50%

SelfCleaning Ball Decks | Техникийн үндэслэл: Rubber balls in pockets beneath the screen surface | Үйл ажиллагааны ашиг тус: Continuous impact on the underside of the mesh prevents clay buildup | ROI нөлөө: Eliminates manual cleaning every 2 цаг, хэмнэлт 3 operatorhours per shift

Нэгдсэн тоос дарах | Техникийн үндэслэл: Water spray nozzles at feed point and discharge chutes | Үйл ажиллагааны ашиг тус: Reduces respirable silica dust (PM10) доор 0.05 мг / м³ | ROI нөлөө: Avoids NESREA fines of ₦5 million+ and protects operator respiratory health

HeavyDuty Coil Springs (4point suspension) | Техникийн үндэслэл: Chromiumsilicon alloy springs with 200mm static deflection | Үйл ажиллагааны ашиг тус: Isolates 95% of vibration from the support structure | ROI нөлөө: Extends structural steel life by 810 жил, eliminating foundation repair costs of ₦2.5 million

4. ӨРСӨЛДӨХ ДАВУУ ТАЛУУД

| Гүйцэтгэлийн хэмжүүр | Аж үйлдвэрийн стандарт (Conventional 2deck screen) | LQS2460 Solution | Давуу тал (% сайжруулалт) |
| : | : | : | : |
| Скрининг үр ашиг (12мм диафрагм, 15% чийг) | 8285% | 9396% | +12% |
| Blinding Frequency (8 цагийн ээлжээр) | 34 events | 0.5 events | 87% |
| Дамжуулах дохио (Цагдаа, minus50mm feed) | 280 Цагдаа | 380 Цагдаа | +36% |
| Liner Replacement Interval | 800 цаг | 2,500 цаг | +212% |
| Операторын станц дахь дуу чимээний түвшин | 95 дүүдэр(Аг) | 82 дүүдэр(Аг) | 14% |
| Шигшсэн тонн тутамд эрчим хүчний хэрэглээ | 0.45 кВт.ц/тн | 0.31 кВт.ц/тн | 31% |

Field data from 12month trial at a granite quarry in Ibadan (similar geology to Lagos).

5. ТЕХНИКИЙН ҮЗҮҮЛЭЛТҮҮД

| Зөнийн тавь чанар | Лал дох үйл |
| : | : |
| Загвар | LQS2460 |
| Тавцан | 2 (дээд: 50мм, доод: 1225mm adjustable) |
| Дэлгэцийн талбай | 9.0 тавцан бүрт м² |
| Хүчин чадал (Нарийн дээд биш) | 450 Цагдаа (хуурай тэжээл, их хэмжээний нягтрал 1.6 t / m³) |
| Чичиргээний давтамж | 8501050 Тараан аялал (VFD-ээр тохируулж болно) |
| Далайц | 812 мм (цус харвалт) |
| Миний биарын хүчин | 2 x 18.5 kw (37 нийт кВт), 415Т, 50Гц, 3үе шат |
| Материалын үзүүлэлтүүд | Бие: IS 2062 Grade B; Бүس: AR400; Босоо ам: EN24T alloy steel |
| Физик хэмжээсүүд (L x W x H) | 6,500 мм x 2,400 мм x 2,800 мм |
| Үйлдлийн жин | 12,800 кг (without media) |
| Байгаль орчны хүрээ | Хүрээлэн буй орчин: 15°C-аас 50 °C хүртэл; Чийгшил: Шалтгаална, хамаарна 98% конденсацигүй |

6. ХЭРЭГЛЭЭНИЙ СУРТАЛЧИЛГАА

Дэд бүтцийн томоохон төсөл (LagosIbadan Railway) | Сорилт: Contractor required ¾inch (19мм) aggregate with less than 3% fines content for concrete sleepers. Existing screen produced 68% нарийн торгог, causing load rejection. | Хариу: Installed LQS2460 with 19mm polyurethane panels and ball decks. | Үр дүн: Fines content reduced to 2.1%. Load acceptance rate increased from 72% нь 99%. Project delivered 18,000 tons per month without penalty.

HighMoisture Season (MayOctober) | Сорилт: Quarry near Ikorodu experienced 22% moisture in ROM during rainy season. Conventional screens blinded completely after 45 minutes of operation. | Хариу: Deployed LQS2460 with variable angle set to 23° and water spray system. | Үр дүн: Continuous operation achieved for 10hour shifts. Screening efficiency maintained at 91%. Lost production recovered: 280 tons per shift.

Secondary Crushing Circuit Upgrade | Сорилт: Plant manager needed to increase base course (019мм) output from 200 TPH хүртэл 320 TPH without adding a new crusher. | Хариу: Replaced existing 1.8m x 4.8m screen with LQS2460. | Үр дүн: Хэлхээний дамжуулах чадвар хүртэл нэмэгдсэн 340 Цагдаа. Recirculating load reduced from 45% нь 28%. Эрчим хүчний тусгай хэрэглээ буурсан 0.14 кВт.ц/тн.

7. АРИЛЖААНЫ ХЭРЭГЛЭЭ

Тоног төхөөрөмжийн үнийн шатлал (ExWorks, Lagos Port):

• Стандарт тохиргоо (LQS2460S): ₦48.5 million – includes base unit, 2 sets of polyurethane panels, мотор асаах самбар.
• Сайжруулсан тохиргоо (LQS2460E): ₦56.2 million – adds VFD for speed control, hydraulic angle adjustment, тоос дарах систем.
• Дээд зэрэглэлийн тохиргоо (LQS2460P): ₦64.8 million – includes all above plus spare exciter unit, 2 additional deck panel sets, remote monitoring module.

Нэмэлт шинж чанарууд:

• Prewash spray bar system: ₦3.2 million
• Ceramiclined feed box: ₦1.8 million
• Автомат тосолгооны систем: ₦950,000

Үйлчилгээний багцууд:

• Үндсэн (Жилийн): ₦2.4 million – includes 2 сайтын үзлэг, vibration analysis report, утасны дэмжлэг.
• Цогц (Жилийн): ₦6.8 million – includes quarterly inspections, 48цагийн яаралтай тусламж, all wear parts at 10% хөнгөлөлт.

Санхүүжилтийн сонголтууд:

• 30% урьдчилгаа төлбөр, тэнцэл давсан 12 саруудад 18% сонирхол (Nigerian commercial bank rates).
• Түрээсийн хот: 24month term at ₦3.1 million per month, with ₦1 buyout at end.
• Equipment tradein: Accepting used screens (ямар ч брэнд) valued at market rate.

8. Түгээмэл асуултууд

Q: Can the LQS2460 handle the high clay content typical of Lagos lateritic overburden?
Аг: Тиймээ, for clay content up to 30%. The ball decks and variable angle feature prevent blinding. For clay exceeding 30%, we recommend the optional prewash system to slurry the fines before screening.

Q: What is the typical lead time for delivery to a Lagos quarry site?
Аг: Standard units are available from our Apapa warehouse within 14 ажлын өдрүүд. Custom configurations (жишээ нь e., special aperture sizes) шаарддаг 68 захиалга баталгаажуулснаас хойш долоо хоног.

Q: How does this screen compare to a banana screen for base course production?
Аг: Banana screens offer higher capacity per unit area but are less effective at removing fines in wet conditions. For Lagos applications where moisture varies, the LQS2460’s adjustable angle provides more consistent efficiency. Талбайн өгөгдлийг харуулж байна 3% better fines removal in wet conditions.

Q: What is the expected lifespan of the polyurethane deck panels?
Аг: With proper feed distribution (no impact from +200mm rocks), panels last 4,0006,000 ажиллах цаг. Panels are reversible, doubling life. Replacement cost per panel: ₦85,000.

Q: Can this unit be integrated with an existing PLC system?
Аг: Тиймээ. The VFD and vibration sensors are Modbus RTU compatible. We provide a standard RS485 interface. Custom integration with Siemens or AllenBradley systems is available as a service.

Q: Үйлдвэрийн операторуудад ямар сургалт явуулдаг вэ?
Аг: We include a 2day onsite training program covering startup procedures, angle adjustment for moisture conditions, panel replacement, and daily vibration monitoring. Refresher training is available at ₦450,000 per session.

Q: What is the warranty coverage?
Аг: 24 months on structural components (биеийн, exciter housing, булаг шанд). 12 months on moving parts (холбогдол, давдас байлаа, моторууд). Excludes wear items (бүس, хавтан, бүсхан). Warranty covers parts replacement; labor is charged at ₦25,000 per hour for onsite work.