Ah now that's what I want to know before going in depth.
Physical constrain are like...I come_I see_I shoot....the tree, I bought_I shoot_ and I eat....the food, I wake up early_travel to the location_wait patiently for the sun to rise_ then I shoot_ in the midst of darkness, did not notice the two large object in front.
Since you'd only 5 minutes to shoot, correction should be only a few seconds to shoot. I suppose that's about the best, given the time frame.
Bcoz there are many things which are beyond your controls. So the following pointers may serve as a guide for your reference.
Shooting sparks are just like shoooting fireworks or lightning, that means long exposure is preferred combining small aperture. Eventually using a tripod is a must.
The most prominent flaw here is the backgrd, the light level is too bright thereby reducing the impact of the sparks.
There are also unwanted reflection, out of focus objects and odd shape silhouettes all around the sparks. The light on the grinding machine is also too bright, is that artificial light or existing ambient light ?
Due to the shutter speed is not long enough , or should say too short / fast( ideally should be varies between 1 sec ~ 4 sec with f/16 ISO 100 ) the trace of sparks is not recorded completely, it should be fanning out according to the direction of the spinning grinding stone, but this can only be achieve with very slow / long shutter speed.
The only thing to do now are try out some lightroom / photoshop masking, burning technique. It may improve to a certain level.
As for composition, the lever is quite obvious, and personally I would leave more room around IF I could get to turn off that back ground light.
With people working and moving around it is nevertheless a very CHALLENGING situation. Given a choice I would not shoot, coz I have no confidence to produce a good shot in such short duration.( few seconds to do an industrial shot ? ) Perhaps someone might share a better / new idea or method so that we all can benefit.